Yes it did the trick - Re[3]: Re[2]: em0, VLAN and bpf(?) trouble w/RELENG_5

Dear Robert, dear Mike,

Micro-patch (#if 0 to comment out 2 lines of code around line 1497) worked
for me (with rev.1.44.2.3 if_em.c)

Tcpdump -I em0 displays all VLANs simultaneously, though, and do not display
VLAN tags.

But the interface is working, packets are going through.

Thank you for the cure, but I think this is not the "fix", just quick hack
for cure...

WBR,
Andrew