l2: fix DVR test failure on AWS Graviton on Ubuntu 22.04

The AWS Graviton make test fails in dvr_test.py on Ubuntu 22.04,
due to a mismatching source MAC address. Debian 11 tests run fine.

The following can be seen in the log.txt trace:

00:00:00:756422: ethernet-input
  frame: flags 0x1, hw-if-index 3, sw-if-index 3
  IP4: 02:03:00:00:ff:02 -> de:ad:00:00:00:00 802.1q vlan 92
00:00:00:756435: l2-input
  l2-input: sw_if_index 6 dst de:ad:00:00:00:00 src 02:03:00:00:ff:02 [l2-input-vtr l2-learn l2-fwd l2-flood l2-flood ]
00:00:00:756438: l2-input-vtr
  l2-input-vtr: sw_if_index 6 dst de:ad:00:00:00:00 src 02:03:00:00:00:00 data 08 00 45 00 00 80 00 01 00 00 40 11
00:00:00:756441: l2-learn
  l2-learn: sw_if_index 6 dst de:ad:00:00:00:00 src 02:03:00:00:00:00 bd_index 1

Note how l2-input-vtr node has the two lowest bytes of the source MAC corrupted.

Discussing with Benoit, since this could be caused by unaligned memory accesses,
using clib_memcpy_fast.

Type: fix
Change-Id: I28991e1166335df0edd1e4b84fa72a2b1d0bb9bf
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>

0 files changed, 0 insertions, 0 deletions