udp: parse in(6)_pktinfo cmsgs

4 files changed, 61 insertions, 71 deletions

diff --git a/Cargo.lock b/Cargo.lock
index a852d8d..8752d9c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -39,7 +39,7 @@ dependencies = [
 
 [[package]]
 name = "backtrace"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace-sys 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -54,7 +54,7 @@ name = "backtrace-sys"
 version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -121,7 +121,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cc"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -139,7 +139,7 @@ dependencies = [
 
 [[package]]
 name = "chrono"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -300,11 +300,11 @@ dependencies = [
 
 [[package]]
 name = "derive_deref"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -330,7 +330,7 @@ name = "failure"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "backtrace 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -504,7 +504,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "libc"
 version = "0.2.40"
-source = "git+https://github.com/rust-lang/libc#cc835c9a76fa7a49109600557b340a445d4e4224"
+source = "git+https://github.com/rust-lang/libc#28b4d1630989318c4a03cacdffd3f8f7651262f4"
 
 [[package]]
 name = "libc"
@@ -650,13 +650,13 @@ dependencies = [
 [[package]]
 name = "nix"
 version = "0.11.0-pre"
-source = "git+https://github.com/nix-rust/nix#2def43d3bcb4de42d4783e4c18413f7999ee5caf"
+source = "git+https://github.com/mcginty/nix?branch=ipv6-pktinfo#e1a23698617ba775b378ea38480f659499000f0f"
 dependencies = [
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "bytes 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.40 (git+https://github.com/rust-lang/libc)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -763,7 +763,7 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -784,7 +784,7 @@ name = "quote"
 version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -866,7 +866,7 @@ name = "ring"
 version = "0.13.0-alpha"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -945,7 +945,7 @@ name = "serde_derive"
 version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive_internals 0.23.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -956,7 +956,7 @@ name = "serde_derive_internals"
 version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -976,7 +976,7 @@ name = "simplelog"
 version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "chrono 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chrono 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "term 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1080,7 +1080,7 @@ name = "syn"
 version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1225,7 +1225,7 @@ dependencies = [
 
 [[package]]
 name = "tokio-core"
-version = "0.1.16"
+version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1234,11 +1234,11 @@ dependencies = [
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "scoped-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "slab 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-reactor 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-timer 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1281,7 +1281,7 @@ dependencies = [
  "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-core 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1355,7 +1355,7 @@ dependencies = [
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-core 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1368,7 +1368,7 @@ dependencies = [
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-utun 0.6.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-core 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1481,11 +1481,11 @@ dependencies = [
  "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "chacha20-poly1305-aead 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "chrono 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chrono 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "colored 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "criterion 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "daemonize 0.2.3 (git+https://github.com/mcginty/daemonize)",
- "derive_deref 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_deref 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fern 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1494,7 +1494,7 @@ dependencies = [
  "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.11.0-pre (git+https://github.com/nix-rust/nix)",
+ "nix 0.11.0-pre (git+https://github.com/mcginty/nix?branch=ipv6-pktinfo)",
  "notify 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "pnet_packet 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1503,7 +1503,7 @@ dependencies = [
  "structopt 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "structopt-derive 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "subtle 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-core 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-signal 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-timer 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1537,7 +1537,7 @@ dependencies = [
 "checksum arrayref 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "0fd1479b7c29641adbd35ff3b5c293922d696a92f25c8c975da3e0acbc87258f"
 "checksum arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)" = "a1e964f9e24d588183fcb43503abda40d288c8657dfc27311516ce2f05675aef"
 "checksum atty 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "af80143d6f7608d746df1520709e5d141c96f240b0e62b0aa41bdfb53374d9d4"
-"checksum backtrace 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "ebbbf59b1c43eefa8c3ede390fcc36820b4999f7914104015be25025e0d62af2"
+"checksum backtrace 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "ebbe525f66f42d207968308ee86bc2dd60aa5fab535b22e616323a173d097d8e"
 "checksum backtrace-sys 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "44585761d6161b0f57afc49482ab6bd067e4edef48c12a152c237eb0203f7661"
 "checksum base64 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "30e93c03064e7590d0466209155251b90c22e37fab1daf2771582598b5827557"
 "checksum bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8dead7461c1127cf637931a1e50934eb6eee8bff2f74433ac7909e9afcee04a3"
@@ -1549,10 +1549,10 @@ dependencies = [
 "checksum bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c129aff112dcc562970abb69e2508b40850dd24c274761bb50fb8a0067ba6c27"
 "checksum bytes 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "1b7db437d718977f6dc9b2e3fd6fc343c02ac6b899b73fdd2179163447bd9ce9"
 "checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
-"checksum cc 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)" = "2b4911e4bdcb4100c7680e7e854ff38e23f1b34d4d9e079efae3da2801341ffc"
+"checksum cc 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)" = "8b9d2900f78631a5876dc5d6c9033ede027253efcd33dd36b1309fc6cab97ee0"
 "checksum cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d4c819a1287eb618df47cc647173c5c4c66ba19d888a6e50d605672aed3140de"
 "checksum chacha20-poly1305-aead 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "77d2058ba29594f69c75e8a9018e0485e3914ca5084e3613cd64529042f5423b"
-"checksum chrono 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ba5f60682a4c264e7f8d77b82e7788938a76befdf949d4a98026d19099c9d873"
+"checksum chrono 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1cce36c92cb605414e9b824f866f5babe0a0368e39ea07393b9b63cf3844c0e6"
 "checksum clap 2.31.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f0f16b89cbb9ee36d87483dc939fe9f1e13c05898d56d7b230a0d4dff033a536"
 "checksum colored 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b0aa3473e85a3161b59845d6096b289bb577874cafeaf75ea1b1beaa6572c7fc"
 "checksum constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8ff012e225ce166d4422e0e78419d901719760f62ae2b7969ca6b564d1b54a9e"
@@ -1567,7 +1567,7 @@ dependencies = [
 "checksum crossbeam-utils 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d636a8b3bcc1b409d7ffd3facef8f21dcb4009626adbd0c5e6c4305c07253c7b"
 "checksum curve25519-dalek 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4576702012648a8d7331c0ebb1a41a13723ef8d5bfc704a7ab4175a02e38906e"
 "checksum daemonize 0.2.3 (git+https://github.com/mcginty/daemonize)" = "<none>"
-"checksum derive_deref 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "75977fd13de1d8a2b0db58cb124e8f1e63cf233917fea33065e8b214d1eccdb8"
+"checksum derive_deref 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "232c0157c26fd44067bcee2025879139cc983d8eed21f8cb5965b6a44e23fb67"
 "checksum digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e5b29bf156f3f4b3c4f610a25ff69370616ae6e0657d416de22645483e72af0a"
 "checksum dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "09c3753c3db574d215cba4ea76018483895d7bff25a31b49ba45db21c48e50ab"
 "checksum either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3be565ca5c557d7f59e7cfcf1844f9e3033650c929c6566f511e8005f205c1d0"
@@ -1608,7 +1608,7 @@ dependencies = [
 "checksum miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
 "checksum net2 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)" = "9044faf1413a1057267be51b5afba8eb1090bd2231c693664aa1db716fe1eae0"
 "checksum nix 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b7fd5681d13fda646462cfbd4e5f2051279a89a544d50eb98c365b507246839f"
-"checksum nix 0.11.0-pre (git+https://github.com/nix-rust/nix)" = "<none>"
+"checksum nix 0.11.0-pre (git+https://github.com/mcginty/nix?branch=ipv6-pktinfo)" = "<none>"
 "checksum nix 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bfb3ddedaa14746434a02041940495bf11325c22f6d36125d3bdd56090d50a79"
 "checksum nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "9a2228dca57108069a5262f2ed8bd2e82496d2e074a06d1ccc7ce1687b6ae0a2"
 "checksum notify 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "5c3812da3098f210a0bb440f9c008471a031aa4c1de07a264fdd75456c95a4eb"
@@ -1622,7 +1622,7 @@ dependencies = [
 "checksum pnet_macros 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5d228096fd739d4e3e60dee9e1e4f07d9ae0f3f309c876834192538748e561e4"
 "checksum pnet_macros_support 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f92b7141318df140dfb8c3f7a1a5a331edb31b1791633cc5c8f03fcd9a7f6ac4"
 "checksum pnet_packet 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ef99f3cfa2c0ed07e9ad6d9f788592d863361a8dd3102989d79b0f6a787ba434"
-"checksum proc-macro2 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "77997c53ae6edd6d187fec07ec41b207063b5ee6f33680e9fa86d405cdd313d4"
+"checksum proc-macro2 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "49b6a521dc81b643e9a51e0d1cf05df46d5a2f3c0280ea72bcb68276ba64a118"
 "checksum quick-error 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "eda5fe9b71976e62bc81b781206aaa076401769b2143379d3eb2118388babac4"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 "checksum quote 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7b0ff51282f28dc1b53fd154298feaa2e77c5ea0dba68e1fd8b03b72fbe13d2a"
@@ -1676,7 +1676,7 @@ dependencies = [
 "checksum thread_local 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "279ef31c19ededf577bfd12dfae728040a21f635b06a24cd670ff510edd38963"
 "checksum time 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "a15375f1df02096fb3317256ce2cee6a1f42fc84ea5ad5fc8c421cfe40c73098"
 "checksum tokio 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "be15ef40f675c9fe66e354d74c73f3ed012ca1aa14d65846a33ee48f1ae8d922"
-"checksum tokio-core 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "799492ccba3d8ed5e41f2520a7cfd504cb65bbfe5fbbbd0012e335ae5f188051"
+"checksum tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "aeeffbbb94209023feaef3c196a41cbcdafa06b4a6f893f68779bb5e53796f71"
 "checksum tokio-executor 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8cac2a7883ff3567e9d66bb09100d09b33d90311feca0206c7ca034bc0c55113"
 "checksum tokio-io 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "6af9eb326f64b2d6b68438e1953341e00ab3cf54de7e35d92bfc73af8555313a"
 "checksum tokio-reactor 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b3cedc8e5af5131dc3423ffa4f877cce78ad25259a9a62de0613735a13ebc64b"
diff --git a/Cargo.toml b/Cargo.toml
index 218c917..aea5708 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,7 @@ log = "^0.4"
 hex = "^0.3"
 notify = "4.0.0"
 rand = "^0.4"
-nix = { git = "https://github.com/nix-rust/nix", branch = "master"}
+nix = { git = "https://github.com/mcginty/nix", branch = "ipv6-pktinfo"}
 mio = "^0.6"
 pnet_packet = "^0.21"
 snow = { git = "https://github.com/mcginty/snow", features = ["ring-accelerated"], branch = "wireguard" }
diff --git a/src/udp/frame.rs b/src/udp/frame.rs
index f04b004..e8f3b69 100644
--- a/src/udp/frame.rs
+++ b/src/udp/frame.rs
@@ -140,27 +140,12 @@ pub type PeerServerMessage = (SocketAddr, Vec<u8>);
 pub struct VecUdpCodec;
 impl VecUdpCodec {
     fn decode(&mut self, src: &SocketAddr, buf: &[u8]) -> io::Result<PeerServerMessage> {
-        let unmapped_ip = match src.ip() {
-            IpAddr::V6(v6addr) => {
-                if let Some(v4addr) = v6_mapped_to_v4(v6addr) {
-                    IpAddr::V4(v4addr)
-                } else {
-                    IpAddr::V6(v6addr)
-                }
-            }
-            v4addr => v4addr
-        };
-        Ok((SocketAddr::new(unmapped_ip, src.port()), buf.to_vec()))
+        Ok((*src, buf.to_vec()))
     }
 
     fn encode(&mut self, msg: PeerServerMessage, buf: &mut Vec<u8>) -> SocketAddr {
         let (mut addr, mut data) = msg;
         buf.append(&mut data);
-        let mapped_ip = match addr.ip() {
-            IpAddr::V4(v4addr) => IpAddr::V6(v4addr.to_ipv6_mapped()),
-            v6addr => v6addr
-        };
-        addr.set_ip(mapped_ip);
         addr
     }
 }
diff --git a/src/udp/mod.rs b/src/udp/mod.rs
index 30a0e0d..d54b726 100644
--- a/src/udp/mod.rs
+++ b/src/udp/mod.rs
@@ -23,7 +23,6 @@ pub struct UdpSocket {
 /// IPV6_RECVPKTINFO is missing from the libc crate. Value taken from https://git.io/vxNel.
 pub const IPV6_RECVPKTINFO : i32 = 61;
 pub const IP_PKTINFO       : i32 = 26;
-pub const IP_RECVDSTADDR   : i32 = 7;
 
 #[repr(C)]
 struct in6_pktinfo {
@@ -46,20 +45,19 @@ impl UdpSocket {
         let socket4 = Socket::new(Domain::ipv4(), Type::dgram(), Some(Protocol::udp()))?;
         let socket6 = Socket::new(Domain::ipv6(), Type::dgram(), Some(Protocol::udp()))?;
 
-        let off: libc::c_int = 0;
         let on: libc::c_int = 1;
-//        unsafe {
-//            let ret = libc::setsockopt(socket.as_raw_fd(),
-//                                       libc::IPPROTO_IP,
-//                                       3,
-//                                       &off as *const _ as *const libc::c_void,
-//                                       mem::size_of_val(&off) as libc::socklen_t);
-//            if ret != 0 {
-//                let err: Result<(), _> = Err(io::Error::last_os_error());
-//                err.expect("setsockopt failed");
-//            }
-//            debug!("set IP_PKTINFO");
-//        }
+        unsafe {
+            let ret = libc::setsockopt(socket4.as_raw_fd(),
+                                       libc::IPPROTO_IP,
+                                       IP_PKTINFO,
+                                       &on as *const _ as *const libc::c_void,
+                                       mem::size_of_val(&on) as libc::socklen_t);
+            if ret != 0 {
+                let err: Result<(), _> = Err(io::Error::last_os_error());
+                err.expect("setsockopt failed");
+            }
+            debug!("set IP_PKTINFO");
+        }
 
         unsafe {
             let ret = libc::setsockopt(socket6.as_raw_fd(),
@@ -75,9 +73,11 @@ impl UdpSocket {
             debug!("set IPV6_PKTINFO");
         }
 
+        socket4.set_nonblocking(true)?;
+        socket4.set_reuse_address(true)?;
+
         socket6.set_only_v6(true)?;
         socket6.set_nonblocking(true)?;
-        socket6.set_reuse_port(true)?;
         socket6.set_reuse_address(true)?;
 
         socket4.bind(&SocketAddrV4::new(Ipv4Addr::unspecified(), port).into())?;
@@ -143,6 +143,8 @@ impl UdpSocket {
         if let Async::NotReady = io.poll_write() {
             return Err(io::ErrorKind::WouldBlock.into())
         }
+
+        debug!("sending udp to {:?}", target);
         match io.get_ref().send_to(buf, target) {
             Ok(n) => Ok(n),
             Err(e) => {
@@ -173,10 +175,13 @@ impl UdpSocket {
             Ok(msg) => {
                 for cmsg in msg.cmsgs() {
                     match cmsg {
-                        ControlMessage::Unknown(_) => {
-                            debug!("unknown cmsg");
-                        }
-                        _ => debug!("known cmsg")
+                        ControlMessage::Ipv4PacketInfo(_) => {
+                            debug!("ipv4 cmsg");
+                        },
+                        ControlMessage::Ipv6PacketInfo(_) => {
+                            debug!("ipv6 cmsg");
+                        },
+                        _ => debug!("unknown cmsg")
                     }
                 }
                 if let Some(SockAddr::Inet(addr)) = msg.address {