On Thu, Nov 26, 2009 at 09:54:17PM +0100, Herbert Poetzl wrote: > > > ip link show dummy0 > > 4: dummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN > > link/ether da:af:48:aa:25:95 brd ff:ff:ff:ff:ff:ff > > > sysctl net/ipv4/ip_forward > > net.ipv4.ip_forward = 1 > > > iptables-save | grep SNAT > > -A POSTROUTING -s 10.0.0.0/8 -d ! 10.0.0.0/8 -j SNAT --to-source 212.85.154.29 > > > grep -R . /etc/vservers/descartes/interfaces/1 > > /etc/vservers/foo/interfaces/1/ip:10.0.0.2 > > /etc/vservers/foo/interfaces/1/prefix:8 > > /etc/vservers/foo/interfaces/1/dev:dummy0 > > /etc/vservers/foo/interfaces/1/name:virt0 > > with this config, if you start the guest, util-vserver > will (according to your config) create an alias > 'dummy0:virt0' with the ip 10.0.0.2/8 and assign that > address to your guest I would like to not restart the guest as there are some users using it, so according to your reply and Ghislain's link, i tried: /etc/vservers/foo/interfaces/1# grep . * dev:dummy0 ip:10.0.0.2 prefix:8 /etc/vservers/foo/interfaces/1# naddress --nid foo \ --add --ip 10.0.0.2 --bcast 10.255.255.255 Adding 10.0.0.2 10.255.255.255 so i connected on foo, i tried: ip addr add dev dummy0 10.0.0.2/8 i have the error: RTNETLINK answers: Operation not permitted i'm very sorry as i feel that i missed something simple. regards -- Marc Chantreux BibLibre, expert en logiciels libres pour l'info-doc http://biblibre.com