Hi!

> while replacing a switch I ran into a problem with using 802.1q VLANs
> (vlan(4)) on a em(4) card - that is, I could not get the card to work
> with VLANs.

Have you tried fiddeling with the flags ?

options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>

examples:

ifconfig em0 -rxcsum -txcsum -wol
ifconfig em0 -vlanmtu -vlanhwtag

I have a 10.3-i386 box with 82574L and VLANs on that interface,
works fine (but I'm not using it for production, only as a test box).

Can you show

sysctl -a | grep dev.em | grep desc

I have:

dev.em.5.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.1.0
dev.em.4.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.1.0
dev.em.3.%desc: Intel(R) PRO/1000 Network Connection 7.6.1-k
dev.em.2.%desc: Intel(R) PRO/1000 Network Connection 7.6.1-k
dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.6.1-k
dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.6.1-k

-- 
p...@opsec.eu            +49 171 3101372                         4 years to go !
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