Hi, when using diffrent routing tables, outgoing packets after SNAT always have hw-adresses as if the packed was coming from my machine. So a forwarded packet to default gw x on eth0 gets hw-adresses as if the same packet with origin loopback was routed to default gw y on network wlan0 which is diffrent. I do "ip rule add iif lo table mine" and some "ip route add ... table mine" for local generated traffic. My "main" rt is configured for forwared traffic. "iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 192.168.1.10" for NAT. (eth1 <-> [NAT] <-> eth0, [local]<->[wlan0]). Thanks for your help Markus