Hello, >If you create separate routing tables you must >duplicate to it the same device routes as you have in main for these >interfaces or/and play with src option. Ok, somehow that works without making too many problems, but I would really like to find a solution that simulates these device routes only if the source port is 67. In the meanwhile, I found out that my solution with for example "ip rule add fwmark 114 table 114", "ip route add to 129.217.14.0/24 dev eth1.114 table 114" and "iptables -t mangle -A OUTPUT -p udp --source-port bootps -d 129.217.14.0/24 -j MARK --set-mark 114" works in so far that unicast DHCP replies are sent from the same device where the request came in, but still the wrong IP is used. This does not change when I use a specific source address in "ip route". I tried to set the correct IP address with SNAT, but it seems that SNAT refuses to use the same port where some application is listening on. So, if I use "iptables -t nat -A POSTROUTING ... --to-source 129.217.14.81:67", nothing is sent, in contrast to other ports. Regards Christoph -- To unsubscribe from this list: send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
