Re: multiple external IP's - virtual NIC - DNAT problems

[<koen.news@koca.be>]

> Not pre-up, put them in up / post-up

> 

> You can also use eth0:1 eth0:2 interface definitions in debian 

> /etc/network/interfaces and use "-i eth0 -d $ip" in your firewall 

> config.

> 

> The eth0:X interfaces are not really network interfaces, they are just 

> secondary ip addresses on the base interface with a different label 

> attached to them for ifconfig backward compatibility.

> 

> Example:

> 	ifconfig eth2:2 192.168.19.123 up

> 	ip addr show dev eth2

> 	-> inet 192.168.19.123/24 brd 192.168.19.255 scope global secondary

eth2:2

> 

> 	ip addr add 192.168.19.124/24 dev eth2

> 	ip addr show dev eth2

> 	-> inet 192.168.19.123/24 brd 192.168.19.255 scope global secondary

eth2:2

> 	-> inet 192.168.19.124/24 scope global secondary eth2

> 

> 

> c'ya

> sven



This is exactly what I needed. Everything works now as expected. 



Sidenote: I first created an extra address with:

ip addr add 192.168.19.124/24 dev eth2



And checked that is was there. THen I put everything in the post-up

command including the one I already did.

invoke-rc.d networking restart didn't activate the other addressess. 

I remove the first one:

ip addr del 192.168.19.124/24 dev eth2



then invoke-rc.d networking restart worked.



Many thanks.

Koen