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>
3 files changed
tree: 4d30b290a1535cd7cc67e29ce6319fca73ef6845
  1. bpf/
  2. context/
  3. dict/
  4. dns/
  5. html/
  6. http/
  7. http2/
  8. icmp/
  9. idna/
  10. internal/
  11. ipv4/
  12. ipv6/
  13. lif/
  14. nettest/
  15. netutil/
  16. proxy/
  17. publicsuffix/
  18. route/
  19. trace/
  20. webdav/
  21. websocket/
  22. xsrftoken/
  23. .gitattributes
  24. .gitignore
  25. AUTHORS
  26. codereview.cfg
  27. CONTRIBUTING.md
  28. CONTRIBUTORS
  29. go.mod
  30. go.sum
  31. LICENSE
  32. PATENTS
  33. README.md
README.md

Go Networking

Go Reference

This repository holds supplementary Go networking libraries.

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