em(4) VLAN + PROMISC still doesn't work with latest CVS version

[Kevin Day]

I recently upgraded to 5.3 on a system, and manually upgraded 
src/sys/dev/em/* to the latest RELENG_5 versions. (1.44.2.4 of if_em.c)

While the VLAN side of things works better than the stock 5.3 version, 
there still is this problem:


ifconfig vlan1 create
ifconfig vlan1  vlan 1    vlandev em1 link0
ifconfig vlan2 create
ifconfig vlan2  vlan 2    vlandev em1 link0
ifconfig vlan3 create
ifconfig vlan3  vlan 3    vlandev em1 link0

ifconfig vlan1 inet 192.aaa.bbb.129 netmask 255.255.255.0
ifconfig vlan2 inet 64.ccc.ddd.61 netmask 255.255.255.192
ifconfig vlan3 inet 64.eee.fff.61 netmask 255.255.255.192

ifconfig em1 up
ifconfig em1 promisc

If I do this, vlan1 and vlan3 work fine. Vlan2 can receive packets, but 
anything sent out vlan2 doesn't seem to be heard by any foreign hosts. 
Setting "ifconfig em1 -promisc" makes all vlans work properly.

This is better than the stock 5.3 version of em(4) where none of the 
vlans worked, but something still isn't right.

Is this a known problem still or am I just doing something wrong?