Владимир

iptables -t nat -A POSTROUTING -s 10.0.0.0/24 ! -d 172.16.0.0/24  -o eth0 -j SNAT --to-source 208.77.188.166
iptables -t nat -A POSTROUTING -s 172.16.0.0/24  ! -d 10.0.0.0/24  -o eth0 -j SNAT --to-source 208.77.188.166

#!/bin/sh

if [ "$IFACE" = "br0" ]; then
    /sbin/sysctl -w net.bridge.bridge-nf-call-arptables=0
    /sbin/sysctl -w net.bridge.bridge-nf-call-iptables=0
    /sbin/sysctl -w net.bridge.bridge-nf-call-ip6tables=0
fi