>> Vlan support depends on the ethernet handling slightly oversize
>> packets; the only plausible reason why an Ethernet interface
>> wouldn't be able to handle vlans is that it can't do oversize
>> packets.  (Everything else about vlans is a host software issue.)  I
>> note your test fails on exactly when packets start being full-size,
>> ie, when the vlan-encapsulated packet is oversize.

> You mean, the manpage is right?  Vlans are not supported on bge
> interfaces in netbsd-1.6 ?

Amazing, isn't it?

I can't be sure, because I don't have one myself to play with.  But
that's certainly what it looks like to me.  (Oh, and you can strike "in
netbsd-1.6" from that, unless the restriction to ETHER_MAX_LEN is
somehow tied up with the host software, which I think...unlikely.)

Sure, you can use vlans - provided everybody uses an MTU of 1496.  But
that's not what most people take "vlans are supported" to mean.

/~\ The ASCII				der Mouse
\ / Ribbon Campaign
 X  Against HTML	       mouse@rodents.montreal.qc.ca
/ \ Email!	     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B