Hi, I am working on a network that uses proxy ARP. It is currently working as it should, but I would like to know if anyone has experience making the router machine operate without an IP. I've been told that you can achieve proxy ARP without using an IP address on the forwarding machine. Currently, an outside connection is fed into one computer, which forwards the requests to the other computers in the subnet. They are behind this firewall and reachable from outside. Currently I use the /proc/sys/net/ipv4/conf/eth0/proxy_arp to set proxy ARP, then use ip route to set up the routing tables, then use /proc/sys/net/ipv4/ip_forward to forward the packets. This stuff won't work without an IP address, so I'm wondering if anyone has had an experience using proxy ARP with a transparent router. Thanks!