tree 915e9fd39d8453563cd738205e863513aedaed59
parent b1ee7b3fbbb773e8e4b649ade000633fb867ba77
author Mikio Hara <mikioh.mikioh@gmail.com> 1419391090 +0900
committer Mikio Hara <mikioh.mikioh@gmail.com> 1419477667 +0900

icmp: prevent stripping off ipv4 header twice on darwin

We cannot use net.ReadFrom on darwin because a) net.ReadFrom and
net.ReadFromIP unconditionally try to strip off ipv4 header due to
and c) icmp.ListenPacket calls ipv4.PacketConn internally.

Instead, we use ipv4.PacketConn.ReadFrom that calls net.ReadMsgIP
internally to prevent icmp.ReadFrom from returning corrupted ICMP
message.

Fixes #9395.

Change-Id: I269f3724de72bf37eb26921c251c2acb1c720fa3