ICMPv6 lacks support for MLDv2

[speakinghedge]

affected version: master

affected protocol(s): IPv6, ICMPv6

brief description: fails to dissect payload after IPv6 extension header (probably related to padding with length of zero) as discovered by @guedou MLDv2 is not supported by the ICMPv6 layer

how to reproduce:

(using attached trace)

frm = rdpcap('ipv6-with-extension-and-zero-padding.pcap', count=1)
frm.show()

actual result:

0000 Ether / fe80::a00:27ff:fed4:10bb > ff02::16 (0) / IPv6ExtHdrHopByHop / Raw

Payload after IPv6ExtHdrHopByHop is dissected as Raw().

expected result:

as seen in Wireshark:

sample trace: ipv6-with-extension-and-zero-padding.zip

[guedou]

Scapy does not currently support MLDv2. That the real issue here.

[speakinghedge]

is see...

for reference: https://tools.ietf.org/html/rfc3810

[guedou]

I am working on a fix.