Configuring VLANs - Why is IP address require on NIC connected to Trunk?

Geoff Roberts geoff at
Fri Jun 19 13:21:24 UTC 2009


On Fri, 19 Jun 2009 12:16:18 am Nikos Vassiliadis wrote:
> Geoff Roberts wrote:
> > I find I have to give the ext0 interface an IP address in order for
> > routing and packet filtering to work on the attached VLANs.
> >
> > a) Is there a way to configure this so that I don't have to give ext0 an
> > IP address?
> Yes, you just have to "up" the interface:
> ifconfig_em0="up"

Thanks to all who responded.

I believe marking the interface as up will be the source of the issue. I'll be 
able to restart the server in a couple of days and verify everything works 
after a restart.

It has been one of those nagging issues that eventually bubbled to the top of 
the list.

Kind regards,


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