Couldn't you use alias ip addresses instead of using vlans?

This way you would assign the secondary ip address using:

ifconfig eth0:0 ip mask up

and remove it using:

ifconfig eth0:0 ip mask up

This should keep you away from complicated stuff like vlan (unless you
need vlans for other purposes) and make dhcp happy.

Ciao,
Umberto

On 9/15/05, Enrico Teotti <[EMAIL PROTECTED]> wrote:
> > INTERFACES="eth0"
> at the beginning it was so, but after restarting dhcp it complained
> about that... I'm not a DHCP expert but I assume it complain the ip of
> eth0 (0.0.0.0) was different from the dhcpd.conf subnets and ips ...
> 
> > How did you setup the VLANs? Are they really VLANs or just alias ip
> > adrresses?
> I've setted eth0 to 0.0.0.0
> then I've added eth0 to vlan1
> vconfig add eth0 1
> then I've configured the eth0.1 ip (192.168.57.150)
> setting the default gw to the proxy's IP
> this way I can ping the proxy and get internet access
> 
> > Is there any chance you've upgraded your dhcp server along the way, to
> > 3.0.3?  In which case, you'd be getting bit by this issue:
> >
> >    http://wiki.ltsp.org/twiki/bin/view/Ltsp/DhcpdSiaddr
> next week I'll be back at the school and I'll check the dhcp version,
> but I'm almost sure it's not changed.
> I've just installed on the Ubuntu system a Sarge vconfig package to
> enable the vlan tools.
> 
> thanks for the tips guys,
> I'll let you know!
> Enrico
> 
> --
> "The only thing necessary for the triumph of evil
> is for good men to do nothing"
>  Edmund Burke
> 
> 
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