golang prefers capital words in case of MAC, ARP and such

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
add udp ip packet type, gofmt sources

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
add udp support

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
add rarp proto

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
add udp

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
Merge pull request #1 from vase/master

golang prefers capital words in case of MAC, ARP and such, also runs gofmt