It is easy to parse, create and manipulate DHCPv6 packets. The DHCPv6
interface is the central way to move packets around. Two concrete
implementations, DHCPv6Message and DHCPv6Relay take care of the
details. The example in main.go shows how to craft a DHCP6
Solicit message with a custom DUID_LLT, encapsulate it in a Relay message,
and print its details.
The output (slightly modified for readability) is
$ go run main.go
2018/11/08 13:56:31 DHCPv6Relay
messageType=RELAY-FORW
hopcount=0
linkaddr=2001:db8::1
peeraddr=2001:db8::2
options=[OptRelayMsg{relaymsg=DHCPv6Message(messageType=SOLICIT transactionID=0x9e0242, 4 options)}]
2018/11/08 13:56:31 [12 0 32 1 13 184 0 0 0 0 0 0 0 0 0 0 0 1 32 1 13 184
0 0 0 0 0 0 0 0 0 0 0 2 0 9 0 52 1 158 2 66 0 1 0 14
0 1 0 1 35 118 253 15 0 250 206 176 12 0 0 6 0 4 0 23
0 24 0 8 0 2 0 0 0 3 0 12 250 206 176 12 0 0 14 16 0
0 21 24]