tree 4d30b290a1535cd7cc67e29ce6319fca73ef6845
parent 37e1c6afe02340126705deced573a85ab75209d7
author Damien Neil <dneil@google.com> 1621619044 -0700
committer Damien Neil <dneil@google.com> 1621627187 +0000

route: revert routing message alignment for FreeBSD 386 emulation

CL 139566 changes the alignment of routing messages on FreeBSD 386
11.2-RELEASE and above kernels to 32-bit.

Empirically, freebsd-386 builders are observing 64-bit aligned routing
messages. Change the alignment back to 64-bit.

Adjust the parsing of routing messages on all platforms to return an
error if the total size of the message does not match expectations.

Fixes golang/go#35513

Change-Id: I0809b8c899b5d84cab7bb4451e3074eee81e2904
Reviewed-on: https://go-review.googlesource.com/c/net/+/321869
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>