tree 0a02cacf276e8dc2a26cb71e682a3fe7fabfe097
parent 99ce762dba455520c792f0deb3b42c395da95daf
author ramosalex <ramosalex@google.com> 1670527159 -0800
committer Copybara-Service <copybara-worker@google.com> 1670527219 -0800

Retrieve the correct IPv6 address when sending an ICMP6 Echo Reply.

When sending an ICMP6 Echo Reply (cl/492531951), the packet was treated as if the IP6 headers were still present at the start of the packet. Instead it was accessing bytes 8-24 of the packet, which has been stripped of IP6 and ICMP6 headers leading to undefined behaviour.

This refactors out the destination IP retrieval and changed the unit test to be more rigid by comparing packet contents.
Logs from successful run: sponge2/103bb5f8-ebde-4d4f-a7fb-92abe1e721f5

PiperOrigin-RevId: 493947520