clatd: use tpacket_auxdata->tp_net L3 header offset information

Test: TreeHugger, ping 1.1.1.1 on v6-only wifi
Bug: 265591307
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I9d4bc095021addd07b80ed8b3928bc336382a210
1 file changed