Add github.com/mdlayher networking libraries

README.md

@@ -491,8 +491,11 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 
 *Libraries for working with various layers of the network*
 
+* [arp](https://github.com/mdlayher/arp) - Package arp implements the ARP protocol, as described in RFC 826.
 * [buffstreams](https://github.com/stabbycutyou/buffstreams) - Streaming protocolbuffer data over TCP made easy
+* [dhcp6](https://github.com/mdlayher/dhcp6) - Package dhcp6 implements a DHCPv6 server, as described in RFC 3315.
 * [dns](https://github.com/miekg/dns) - Go library for working with DNS
+* [ethernet](https://github.com/mdlayher/ethernet) - Package ethernet implements marshaling and unmarshaling of IEEE 802.3 Ethernet II frames and IEEE 802.1Q VLAN tags.
 * [ftp](https://github.com/jlaffaye/ftp) - Package ftp implements a FTP client as described in [RFC 959](http://tools.ietf.org/html/rfc959).
 * [go-stun](https://github.com/ccding/go-stun) - A go implementation of the STUN client (RFC 3489 and RFC 5389).
 * [gopacket](https://github.com/google/gopacket) - A Go library for packet processing with libpacp bindings
@@ -503,6 +506,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * [linkio](https://github.com/ian-kent/linkio) - Network link speed simulation for Reader/Writer interfaces
 * [mdns](https://github.com/hashicorp/mdns) - Simple mDNS (Multicast DNS) client/server library in Golang
 * [portproxy](https://github.com/aybabtme/portproxy) - Simple TCP proxy which adds CORS support to API's which don't support it.
+* [raw](https://github.com/mdlayher/raw) - Package raw enables reading and writing data at the device driver level for a network interface.
 * [sftp](https://github.com/pkg/sftp) - Package sftp implements the SSH File Transfer Protocol as described in https://filezilla-project.org/specs/draft-ietf-secsh-filexfer-02.txt.
 * [tcp_server](https://github.com/firstrow/tcp_server) - A Go library for building tcp servers faster
 
@@ -634,7 +638,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * Testing Frameworks
     * [assert](https://github.com/bluesuncorp/assert) - Basic Assertion Library used along side native go testing, with building blocks for custom assertions
     * [assert](https://github.com/bmizerany/assert) - Asserts to Go testing
-    * [bro](https://github.com/marioidival/bro) - Watch files in directory and run tests for them 
+    * [bro](https://github.com/marioidival/bro) - Watch files in directory and run tests for them
     * [ginkgo](http://onsi.github.io/ginkgo/) - BDD Testing Framework for Go
     * [go-mutesting](https://github.com/zimmski/go-mutesting) - Mutation testing for Go source code
     * [goblin](https://github.com/franela/goblin) - Mocha like testing framework fo Go