diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4a71db..35654a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ This project follows [semantic versioning](http://semver.org).
 - [changed] Warning for missing router is now info
 - [changed] New warning on claimed addresses in learning mode
 - [changed] Updated dependencies
+- [changed] Rewrote argument parsing
 - [fixed] Fixed problem that could lead to 100% cpu consumption
 
 
diff --git a/Cargo.lock b/Cargo.lock
index be20e6b..b99912b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,11 +1,11 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
 [[package]]
-name = "aho-corasick"
-version = "0.7.10"
+name = "ansi_term"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -18,6 +18,16 @@ dependencies = [
  "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "hermit-abi 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "base-x"
 version = "0.2.6"
@@ -53,6 +63,20 @@ name = "cfg-if"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "clap"
+version = "2.33.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vec_map 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "daemonize"
 version = "0.4.1"
@@ -67,17 +91,6 @@ name = "discard"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "docopt"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.110 (registry+https://github.com/rust-lang/crates.io-index)",
- "strsim 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "dtoa"
 version = "0.4.5"
@@ -98,6 +111,22 @@ dependencies = [
  "wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "heck"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "http"
 version = "0.2.1"
@@ -137,10 +166,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "js-sys"
-version = "0.3.39"
+version = "0.3.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "wasm-bindgen 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -171,11 +200,6 @@ name = "matches"
 version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "memchr"
-version = "2.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "nix"
 version = "0.14.1"
@@ -229,6 +253,30 @@ dependencies = [
  "nix 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro-error-attr 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "version_check 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn-mid 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "version_check 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "proc-macro-hack"
 version = "0.5.16"
@@ -292,22 +340,6 @@ name = "redox_syscall"
 version = "0.1.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "regex"
-version = "1.3.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "aho-corasick 0.7.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.6.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "regex-syntax"
-version = "0.6.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "remove_dir_all"
 version = "0.5.2"
@@ -326,7 +358,7 @@ dependencies = [
  "once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -360,9 +392,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "serde"
 version = "1.0.110"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "serde_derive 1.0.110 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "serde_derive"
@@ -439,7 +468,7 @@ dependencies = [
  "stdweb-derive 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "stdweb-internal-macros 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "stdweb-internal-runtime 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -476,9 +505,31 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "strsim"
-version = "0.9.3"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "structopt"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt-derive 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "structopt-derive"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-error 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.27"
@@ -489,6 +540,16 @@ dependencies = [
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "syn-mid"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.1.0"
@@ -503,11 +564,11 @@ dependencies = [
 ]
 
 [[package]]
-name = "thread_local"
-version = "1.0.1"
+name = "textwrap"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -561,6 +622,16 @@ dependencies = [
  "smallvec 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "unicode-width"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.0"
@@ -581,6 +652,11 @@ dependencies = [
  "percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "version_check"
 version = "0.9.2"
@@ -597,7 +673,6 @@ version = "1.3.0"
 dependencies = [
  "cc 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "daemonize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "docopt 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "igd 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -611,6 +686,7 @@ dependencies = [
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  "signal 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "siphasher 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "yaml-rust 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -623,16 +699,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-macro 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-macro 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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@@ -641,42 +717,42 @@ dependencies = [
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  "quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-shared 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-shared 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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- "wasm-bindgen-macro-support 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-macro-support 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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- "wasm-bindgen-shared 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-backend 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-shared 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "web-sys"
-version = "0.3.39"
+version = "0.3.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "js-sys 0.3.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -720,8 +796,9 @@ dependencies = [
 ]
 
 [metadata]
-"checksum aho-corasick 0.7.10 (registry+https://github.com/rust-lang/crates.io-index)" = "8716408b8bc624ed7f65d223ddb9ac2d044c0547b6fa4b0d554f3a9540496ada"
+"checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 "checksum attohttpc 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "baf13118df3e3dce4b5ac930641343b91b656e4e72c8f8325838b01a4b1c9d45"
+"checksum atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 "checksum base-x 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "1b20b618342cf9891c292c4f5ac2cde7287cc5c87e87e9c769d617793607dec1"
 "checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 "checksum boxfnonce 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5988cb1d626264ac94100be357308f29ff7cbdd3b36bda27f450a4ee3f713426"
@@ -729,23 +806,24 @@ dependencies = [
 "checksum bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "130aac562c0dd69c56b3b1cc8ffd2e17be31d0b6c25b61c96b76231aa23e39e1"
 "checksum cc 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)" = "7bbb73db36c1246e9034e307d0fba23f9a2e251faa47ade70c1bd252220c8311"
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+"checksum clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bdfa80d47f954d53a35a64987ca1422f495b8d6483c0fe9f7117b36c2a792129"
 "checksum daemonize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "70c24513e34f53b640819f0ac9f705b673fcf4006d7aab8778bee72ebfc89815"
 "checksum discard 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
-"checksum docopt 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7f525a586d310c87df72ebcd98009e57f1cc030c8c268305287a476beb653969"
 "checksum dtoa 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "4358a9e11b9a09cf52383b451b49a169e8d797b68aa02301ff586d70d9661ea3"
 "checksum fnv 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 "checksum getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
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+"checksum js-sys 0.3.40 (registry+https://github.com/rust-lang/crates.io-index)" = "ce10c23ad2ea25ceca0093bd3192229da4c5b3c0f2de499c1ecac0d98d452177"
 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 "checksum libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)" = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
 "checksum linked-hash-map 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8dd5a6d5999d9907cda8ed67bbd137d3af8085216c2ac62de5be860bd41f304a"
 "checksum log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
 "checksum matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
-"checksum memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
 "checksum nix 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)" = "6c722bee1037d430d0f8e687bbdbf222f27cc6e4e68d5caf630857bb2b6dbdce"
 "checksum nix 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dd0eaf8df8bab402257e0a5c17a254e4cc1f72a93588a1ddfb5d356c801aa7cb"
 "checksum once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0b631f7e854af39a1739f401cf34a8a013dfe09eac4fa4dba91e9768bd28168d"
@@ -753,6 +831,8 @@ dependencies = [
 "checksum pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)" = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
 "checksum ppv-lite86 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "237a5ed80e274dbc66f86bd59c1e25edc039660be53194b5fe0a482e0f2612ea"
 "checksum privdrop 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "939fa7cbfef9c15c65cf2fb3ed57f3f2a14dca1757a556aa1ba4a7f998b2b479"
+"checksum proc-macro-error 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "98e9e4b82e0ef281812565ea4751049f1bdcdfccda7d3f459f2e138a40c08678"
+"checksum proc-macro-error-attr 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4f5444ead4e9935abd7f27dc51f7e852a0569ac888096d5ec2499470794e2e53"
 "checksum proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)" = "7e0456befd48169b9f13ef0f0ad46d492cf9d2dbb918bcf38e01eed4ce3ec5e4"
 "checksum proc-macro2 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)" = "1502d12e458c49a4c9cbff560d0fe0060c252bc29799ed94ca2ed4bb665a0101"
 "checksum quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "54a21852a652ad6f610c9510194f398ff6f8692e334fd1145fed931f7fbe44ea"
@@ -761,8 +841,6 @@ dependencies = [
 "checksum rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 "checksum rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
 "checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
-"checksum regex 1.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "a6020f034922e3194c711b82a627453881bc4682166cabb07134a10c26ba7692"
-"checksum regex-syntax 0.6.17 (registry+https://github.com/rust-lang/crates.io-index)" = "7fe5bd57d1d7414c6b5ed48563a2c855d995ff777729dcd91c369ec7fea395ae"
 "checksum remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4a83fa3702a688b9359eccba92d153ac33fd2e8462f9e0e3fdf155239ea7792e"
 "checksum ring 0.16.13 (registry+https://github.com/rust-lang/crates.io-index)" = "703516ae74571f24b465b4a1431e81e2ad51336cb0ded733a55a1aa3eccac196"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
@@ -783,27 +861,33 @@ dependencies = [
 "checksum stdweb-derive 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
 "checksum stdweb-internal-macros 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "58fa5ff6ad0d98d1ffa8cb115892b6e69d67799f6763e162a1c9db421dc22e11"
 "checksum stdweb-internal-runtime 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
-"checksum strsim 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
+"checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+"checksum structopt 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "863246aaf5ddd0d6928dfeb1a9ca65f505599e4e1b399935ef7e75107516b4ef"
+"checksum structopt-derive 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)" = "d239ca4b13aee7a2142e6795cbd69e457665ff8037aed33b3effdc430d2f927a"
 "checksum syn 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)" = "ef781e621ee763a2a40721a8861ec519cb76966aee03bb5d00adb6a31dc1c1de"
+"checksum syn-mid 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7be3539f6c128a931cf19dcee741c1af532c7fd387baa739c03dd2e96479338a"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
-"checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
+"checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
 "checksum time 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)" = "3a51cadc5b1eec673a685ff7c33192ff7b7603d0b75446fb354939ee615acb15"
 "checksum time-macros 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9ae9b6e9f095bc105e183e3cd493d72579be3181ad4004fceb01adbe9eecab2d"
 "checksum time-macros-impl 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e5c3be1edfad6027c69f5491cf4cb310d1a71ecd6af742788c6ff8bced86b8fa"
 "checksum unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
 "checksum unicode-normalization 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "5479532badd04e128284890390c1e876ef7a993d0570b3597ae43dfa1d59afa4"
+"checksum unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
+"checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum untrusted 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 "checksum url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
+"checksum vec_map 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 "checksum version_check 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 "checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-"checksum wasm-bindgen 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "e3c7d40d09cdbf0f4895ae58cf57d92e1e57a9dd8ed2e8390514b54a47cc5551"
-"checksum wasm-bindgen-backend 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "c3972e137ebf830900db522d6c8fd74d1900dcfc733462e9a12e942b00b4ac94"
-"checksum wasm-bindgen-macro 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "2cd85aa2c579e8892442954685f0d801f9129de24fa2136b2c6a539c76b65776"
-"checksum wasm-bindgen-macro-support 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "8eb197bd3a47553334907ffd2f16507b4f4f01bbec3ac921a7719e0decdfe72a"
-"checksum wasm-bindgen-shared 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "a91c2916119c17a8e316507afaaa2dd94b47646048014bbdf6bef098c1bb58ad"
-"checksum web-sys 0.3.39 (registry+https://github.com/rust-lang/crates.io-index)" = "8bc359e5dd3b46cb9687a051d50a2fdd228e4ba7cf6fcf861a5365c3d671a642"
+"checksum wasm-bindgen 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)" = "4c2dc4aa152834bc334f506c1a06b866416a8b6697d5c9f75b9a689c8486def0"
+"checksum wasm-bindgen-backend 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)" = "ded84f06e0ed21499f6184df0e0cb3494727b0c5da89534e0fcc55c51d812101"
+"checksum wasm-bindgen-macro 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)" = "838e423688dac18d73e31edce74ddfac468e37b1506ad163ffaf0a46f703ffe3"
+"checksum wasm-bindgen-macro-support 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)" = "3156052d8ec77142051a533cdd686cba889537b213f948cd1d20869926e68e92"
+"checksum wasm-bindgen-shared 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)" = "c9ba19973a58daf4db6f352eda73dc0e289493cd29fb2632eb172085b6521acd"
+"checksum web-sys 0.3.40 (registry+https://github.com/rust-lang/crates.io-index)" = "7b72fe77fd39e4bd3eaa4412fd299a0be6b3dfe9d2597e2f1c20beb968f41d17"
 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
index a495b99..3ac563d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ edition = "2018"
 
 [dependencies]
 time = "0.2"
-docopt = "^1"
+structopt = "0.3"
 serde = "1.0"
 serde_derive = "1.0"
 serde_yaml = "0.8"
diff --git a/src/config.rs b/src/config.rs
index 5b1047b..c24899b 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -172,76 +172,76 @@ impl Config {
     }
 
     pub fn merge_args(&mut self, mut args: Args) {
-        if let Some(val) = args.flag_type {
+        if let Some(val) = args.type_ {
             self.device_type = val;
         }
-        if let Some(val) = args.flag_device {
+        if let Some(val) = args.device {
             self.device_name = val;
         }
-        if let Some(val) = args.flag_device_path {
+        if let Some(val) = args.device_path {
             self.device_path = Some(val);
         }
-        if let Some(val) = args.flag_ifup {
+        if let Some(val) = args.ifup {
             self.ifup = Some(val);
         }
-        if let Some(val) = args.flag_ifdown {
+        if let Some(val) = args.ifdown {
             self.ifdown = Some(val);
         }
-        if let Some(val) = args.flag_crypto {
+        if let Some(val) = args.crypto {
             self.crypto = val;
         }
-        if let Some(val) = args.flag_shared_key {
+        if let Some(val) = args.key {
             self.shared_key = Some(val);
         }
-        if let Some(val) = args.flag_network_id {
+        if let Some(val) = args.network_id {
             warn!("The --network-id argument is deprecated, please use --magic instead.");
             self.magic = Some(val);
         }
-        if let Some(val) = args.flag_magic {
+        if let Some(val) = args.magic {
             self.magic = Some(val);
         }
-        if let Some(val) = args.flag_listen {
+        if let Some(val) = args.listen {
             self.listen = parse_listen(&val);
         }
-        self.peers.append(&mut args.flag_connect);
-        if let Some(val) = args.flag_peer_timeout {
+        self.peers.append(&mut args.connect);
+        if let Some(val) = args.peer_timeout {
             self.peer_timeout = val;
         }
-        if let Some(val) = args.flag_keepalive {
+        if let Some(val) = args.keepalive {
             self.keepalive = Some(val);
         }
-        if let Some(val) = args.flag_beacon_store {
+        if let Some(val) = args.beacon_store {
             self.beacon_store = Some(val);
         }
-        if let Some(val) = args.flag_beacon_load {
+        if let Some(val) = args.beacon_load {
             self.beacon_load = Some(val);
         }
-        if let Some(val) = args.flag_beacon_interval {
+        if let Some(val) = args.beacon_interval {
             self.beacon_interval = val;
         }
-        if let Some(val) = args.flag_mode {
+        if let Some(val) = args.mode {
             self.mode = val;
         }
-        if let Some(val) = args.flag_dst_timeout {
+        if let Some(val) = args.dst_timeout {
             self.dst_timeout = val;
         }
-        self.subnets.append(&mut args.flag_subnet);
-        if args.flag_no_port_forwarding {
+        self.subnets.append(&mut args.subnets);
+        if args.no_port_forwarding {
             self.port_forwarding = false;
         }
-        if args.flag_daemon {
+        if args.daemon {
             self.daemonize = true;
         }
-        if let Some(val) = args.flag_pid_file {
+        if let Some(val) = args.pid_file {
             self.pid_file = Some(val);
         }
-        if let Some(val) = args.flag_stats_file {
+        if let Some(val) = args.stats_file {
             self.stats_file = Some(val);
         }
-        if let Some(val) = args.flag_user {
+        if let Some(val) = args.user {
             self.user = Some(val);
         }
-        if let Some(val) = args.flag_group {
+        if let Some(val) = args.group {
             self.group = Some(val);
         }
     }
@@ -417,30 +417,30 @@ fn config_merge() {
         ..Default::default()
     });
     config.merge_args(Args {
-        flag_type: Some(Type::Tap),
-        flag_device: Some("vpncloud0".to_string()),
-        flag_device_path: Some("/dev/null".to_string()),
-        flag_ifup: Some("ifconfig $IFNAME 10.0.1.2/16 mtu 1400 up".to_string()),
-        flag_ifdown: Some("ifconfig $IFNAME down".to_string()),
-        flag_crypto: Some(CryptoMethod::ChaCha20),
-        flag_shared_key: Some("anothersecret".to_string()),
-        flag_magic: Some("hash:mynet".to_string()),
-        flag_listen: Some("3211".to_string()),
-        flag_peer_timeout: Some(1801),
-        flag_keepalive: Some(850),
-        flag_dst_timeout: Some(301),
-        flag_beacon_store: Some("/run/vpncloud.beacon.out2".to_string()),
-        flag_beacon_load: Some("/run/vpncloud.beacon.in2".to_string()),
-        flag_beacon_interval: Some(3600),
-        flag_mode: Some(Mode::Switch),
-        flag_subnet: vec![],
-        flag_connect: vec!["another:3210".to_string()],
-        flag_no_port_forwarding: true,
-        flag_daemon: true,
-        flag_pid_file: Some("/run/vpncloud-mynet.run".to_string()),
-        flag_stats_file: Some("/var/log/vpncloud-mynet.stats".to_string()),
-        flag_user: Some("root".to_string()),
-        flag_group: Some("root".to_string()),
+        type_: Some(Type::Tap),
+        device: Some("vpncloud0".to_string()),
+        device_path: Some("/dev/null".to_string()),
+        ifup: Some("ifconfig $IFNAME 10.0.1.2/16 mtu 1400 up".to_string()),
+        ifdown: Some("ifconfig $IFNAME down".to_string()),
+        crypto: Some(CryptoMethod::ChaCha20),
+        key: Some("anothersecret".to_string()),
+        magic: Some("hash:mynet".to_string()),
+        listen: Some("3211".to_string()),
+        peer_timeout: Some(1801),
+        keepalive: Some(850),
+        dst_timeout: Some(301),
+        beacon_store: Some("/run/vpncloud.beacon.out2".to_string()),
+        beacon_load: Some("/run/vpncloud.beacon.in2".to_string()),
+        beacon_interval: Some(3600),
+        mode: Some(Mode::Switch),
+        subnets: vec![],
+        connect: vec!["another:3210".to_string()],
+        no_port_forwarding: true,
+        daemon: true,
+        pid_file: Some("/run/vpncloud-mynet.run".to_string()),
+        stats_file: Some("/var/log/vpncloud-mynet.stats".to_string()),
+        user: Some("root".to_string()),
+        group: Some("root".to_string()),
         ..Default::default()
     });
     assert_eq!(config, Config {
diff --git a/src/crypto.rs b/src/crypto.rs
index 287dcc3..b6cb6fb 100644
--- a/src/crypto.rs
+++ b/src/crypto.rs
@@ -2,7 +2,7 @@
 // Copyright (C) 2015-2020  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)
 
-use std::num::NonZeroU32;
+use std::{num::NonZeroU32, str::FromStr};
 
 use ring::{aead::*, pbkdf2, rand::*};
 
@@ -19,6 +19,17 @@ pub enum CryptoMethod {
     #[serde(rename = "aes256")]
     AES256
 }
+impl FromStr for CryptoMethod {
+    type Err = &'static str;
+
+    fn from_str(text: &str) -> Result<Self, Self::Err> {
+        Ok(match &text.to_lowercase() as &str {
+            "chacha20" | "chacha" => Self::ChaCha20,
+            "aes256" | "aes" => Self::AES256,
+            _ => return Err("Unknown method")
+        })
+    }
+}
 
 pub struct CryptoData {
     crypto_key: LessSafeKey,
diff --git a/src/device.rs b/src/device.rs
index ba02173..8c9cfb0 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -6,7 +6,8 @@ use std::{
     collections::VecDeque,
     fmt, fs,
     io::{self, Error as IoError, ErrorKind, Read, Write},
-    os::unix::io::{AsRawFd, RawFd}
+    os::unix::io::{AsRawFd, RawFd},
+    str::FromStr
 };
 
 use super::types::Error;
@@ -23,7 +24,7 @@ pub enum Type {
     /// Tun interface: This interface transports IP packets.
     #[serde(rename = "tun")]
     Tun,
-    /// Tap interface: This insterface transports Ethernet frames.
+    /// Tap interface: This interface transports Ethernet frames.
     #[serde(rename = "tap")]
     Tap,
     /// Dummy interface: This interface does nothing.
@@ -41,6 +42,18 @@ impl fmt::Display for Type {
     }
 }
 
+impl FromStr for Type {
+    type Err = &'static str;
+
+    fn from_str(text: &str) -> Result<Self, Self::Err> {
+        Ok(match &text.to_lowercase() as &str {
+            "tun" => Self::Tun,
+            "tap" => Self::Tap,
+            "dummy" => Self::Dummy,
+            _ => return Err("Unknown device type")
+        })
+    }
+}
 
 pub trait Device: AsRawFd {
     /// Returns the type of this device
diff --git a/src/main.rs b/src/main.rs
index 52f70e7..eda6ef6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -30,7 +30,7 @@ pub mod traffic;
 pub mod types;
 pub mod udpmessage;
 
-use docopt::Docopt;
+use structopt::StructOpt;
 
 use std::{
     fs::{self, File, Permissions},
@@ -59,41 +59,127 @@ use crate::{
 const VERSION: u8 = 1;
 const MAGIC: HeaderMagic = *b"vpn\x01";
 
-static USAGE: &str = include_str!("usage.txt");
 
-
-#[derive(Deserialize, Debug, Default)]
+#[derive(StructOpt, Debug, Default)]
 pub struct Args {
-    flag_config: Option<String>,
-    flag_type: Option<Type>,
-    flag_device_path: Option<String>,
-    flag_mode: Option<Mode>,
-    flag_shared_key: Option<String>,
-    flag_crypto: Option<CryptoMethod>,
-    flag_subnet: Vec<String>,
-    flag_device: Option<String>,
-    flag_listen: Option<String>,
-    flag_network_id: Option<String>,
-    flag_magic: Option<String>,
-    flag_connect: Vec<String>,
-    flag_peer_timeout: Option<Duration>,
-    flag_keepalive: Option<Duration>,
-    flag_dst_timeout: Option<Duration>,
-    flag_beacon_store: Option<String>,
-    flag_beacon_load: Option<String>,
-    flag_beacon_interval: Option<Duration>,
-    flag_verbose: bool,
-    flag_quiet: bool,
-    flag_ifup: Option<String>,
-    flag_ifdown: Option<String>,
-    flag_version: bool,
-    flag_no_port_forwarding: bool,
-    flag_daemon: bool,
-    flag_pid_file: Option<String>,
-    flag_stats_file: Option<String>,
-    flag_user: Option<String>,
-    flag_group: Option<String>,
-    flag_log_file: Option<String>
+    /// Read configuration options from the specified file.
+    #[structopt(long)]
+    config: Option<String>,
+
+    /// Set the type of network ("tap" or "tun")
+    #[structopt(name = "type", short, long)]
+    type_: Option<Type>,
+
+    /// Set the path of the base device
+    #[structopt(long)]
+    device_path: Option<String>,
+
+    /// The mode of the VPN ("normal", "router", "switch", or "hub")
+    #[structopt(short, long)]
+    mode: Option<Mode>,
+
+    /// The shared key to encrypt all traffic
+    #[structopt(short, long, aliases=&["shared-key", "secret-key", "secret"])]
+    key: Option<String>,
+
+    /// The encryption method to use ("aes256", or "chacha20")
+    #[structopt(long)]
+    crypto: Option<CryptoMethod>,
+
+    /// The local subnets to use
+    #[structopt(short, long)]
+    subnets: Vec<String>,
+
+    /// Name of the virtual device
+    #[structopt(short, long)]
+    device: Option<String>,
+
+    /// The port number (or ip:port) on which to listen for data
+    #[structopt(short, long)]
+    listen: Option<String>,
+
+    /// Optional token that identifies the network. (DEPRECATED)
+    #[structopt(long)]
+    network_id: Option<String>,
+
+    /// Override the 4-byte magic header of each packet
+    #[structopt(long)]
+    magic: Option<String>,
+
+    /// Address of a peer to connect to
+    #[structopt(short, long)]
+    connect: Vec<String>,
+
+    /// Peer timeout in seconds
+    #[structopt(long)]
+    peer_timeout: Option<Duration>,
+    /// Periodically send message to keep connections alive
+    #[structopt(long)]
+    keepalive: Option<Duration>,
+
+    /// Switch table entry timeout in seconds
+    #[structopt(long)]
+    dst_timeout: Option<Duration>,
+
+    /// The file path or |command to store the beacon
+    #[structopt(long)]
+    beacon_store: Option<String>,
+
+    /// The file path or |command to load the beacon
+    #[structopt(long)]
+    beacon_load: Option<String>,
+
+    /// Beacon store/load interval in seconds
+    #[structopt(long)]
+    beacon_interval: Option<Duration>,
+
+    /// Print debug information
+    #[structopt(short, long, conflicts_with = "quiet")]
+    verbose: bool,
+
+    /// Only print errors and warnings
+    #[structopt(short, long)]
+    quiet: bool,
+
+    /// A command to setup the network interface
+    #[structopt(long)]
+    ifup: Option<String>,
+
+    /// A command to bring down the network interface
+    #[structopt(long)]
+    ifdown: Option<String>,
+
+    /// Print the version and exit
+    #[structopt(long)]
+    version: bool,
+
+    /// Disable automatic port forwarding
+    #[structopt(long)]
+    no_port_forwarding: bool,
+
+    /// Run the process in the background
+    #[structopt(long)]
+    daemon: bool,
+
+    /// Store the process id in this file when daemonizing
+    #[structopt(long)]
+    pid_file: Option<String>,
+
+    /// Print statistics to this file
+    #[structopt(long)]
+    stats_file: Option<String>,
+
+    /// Run as other user
+    #[structopt(long)]
+    user: Option<String>,
+
+    /// Run as other group
+    #[structopt(long)]
+    group: Option<String>,
+
+    /// Print logs also to this file
+    #[structopt(long)]
+    log_file: Option<String>
 }
 
 struct DualLogger {
@@ -326,23 +412,23 @@ fn run<P: Protocol>(config: Config) {
 }
 
 fn main() {
-    let args: Args = Docopt::new(USAGE).and_then(|d| d.deserialize()).unwrap_or_else(|e| e.exit());
-    if args.flag_version {
+    let args: Args = Args::from_args();
+    if args.version {
         println!("VpnCloud v{}, protocol version {}", env!("CARGO_PKG_VERSION"), VERSION);
         return
     }
-    let logger = try_fail!(DualLogger::new(args.flag_log_file.as_ref()), "Failed to open logfile: {}");
+    let logger = try_fail!(DualLogger::new(args.log_file.as_ref()), "Failed to open logfile: {}");
     log::set_boxed_logger(Box::new(logger)).unwrap();
-    assert!(!args.flag_verbose || !args.flag_quiet);
-    log::set_max_level(if args.flag_verbose {
+    assert!(!args.verbose || !args.quiet);
+    log::set_max_level(if args.verbose {
         log::LevelFilter::Debug
-    } else if args.flag_quiet {
+    } else if args.quiet {
         log::LevelFilter::Error
     } else {
         log::LevelFilter::Info
     });
     let mut config = Config::default();
-    if let Some(ref file) = args.flag_config {
+    if let Some(ref file) = args.config {
         info!("Reading config file '{}'", file);
         let f = try_fail!(File::open(file), "Failed to open config file: {:?}");
         let config_file = try_fail!(serde_yaml::from_reader(f), "Failed to load config file: {:?}");
diff --git a/src/types.rs b/src/types.rs
index dfbc4c9..9838522 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -206,6 +206,19 @@ impl fmt::Display for Mode {
         }
     }
 }
+impl FromStr for Mode {
+    type Err = &'static str;
+
+    fn from_str(text: &str) -> Result<Self, Self::Err> {
+        Ok(match &text.to_lowercase() as &str {
+            "normal" => Self::Normal,
+            "hub" => Self::Hub,
+            "switch" => Self::Switch,
+            "router" => Self::Router,
+            _ => return Err("Unknown mode")
+        })
+    }
+}
 
 pub trait Table {
     fn learn(&mut self, _: Address, _: Option<u8>, _: SocketAddr);
diff --git a/src/usage.txt b/src/usage.txt
deleted file mode 100644
index 93e6a96..0000000
--- a/src/usage.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-Usage:
-    vpncloud [options] [--config <file>] [-t <type>] [-d <name>] [-l <port>] [-c <addr>...] [-s <subnet>...]
-
-Options:
-    --config <file>                 Read configuration options from the
-                                    specified file.
-    -t <type>, --type <type>        Set the type of network ("tap" or "tun").
-    --device-path <path>            Set the path of the base device.
-    -d <name>, --device <name>      Name of the virtual device.
-    -m <mode>, --mode <mode>        The mode of the VPN ("hub", "switch",
-                                    "router", or "normal").
-    -l <port>, --listen <port>      The port number on which to listen for data.
-    -c <addr>, --connect <addr>     Address of a peer to connect to.
-    -s <subnet>, --subnet <subnet>    The local subnets to use.
-    --magic <hex>                   Override the 4-byte magic header of each
-                                    packet.
-    --network-id <id>               Optional token that identifies the network.
-                                    (DEPRECATED)
-    --shared-key <key>              The shared key to encrypt all traffic.
-    --crypto <method>               The encryption method to use ("aes256", or
-                                    "chacha20").
-    --peer-timeout <secs>           Peer timeout in seconds.
-    --keepalive <secs>              Periodically send message to keep
-                                    connections alive.
-    --dst-timeout <secs>            Switch table entry timeout in seconds.
-    --beacon-store <path|command>   The file or command to store the beacon.
-    --beacon-load <path|command>    The file or command to load the beacon.
-    --beacon-interval <secs>        Beacon store/load interval in seconds.
-    --ifup <command>                A command to setup the network interface.
-    --ifdown <command>              A command to bring down the network
-                                    interface.
-    --pid-file <file>               Store the process id in this file when
-                                    daemonizing.
-    --user <user>                   Run as other user.
-    --group <group>                 Run as other group.
-    --log-file <file>               Print logs also to this file.
-    --stats-file <file>             Print statistics to this file.
-    --no-port-forwarding            Disable automatic port forward.
-    --daemon                        Run the process in the background.
-    -v, --verbose                   Print debug information.
-    -q, --quiet                     Only print errors and warnings.
-    -h, --help                      Display the help.
-    -V, --version                   Print the version and exit.