I have FIOS and provided Actiontec MI424WR router. This particular router has a very nice feature - DNS server. It is integrated with DHCP server, so when new client connects - it either provides a host name or router assigns "new-hostNN" to it. Then admin can change DHCP lease to static and update host name to be used for this MAC. All DHCP assignments are automatically reflected in built-in DNS server. In addition, Admin can add any custom entry to the DNS(like in hosts file: IP name). Local DHCP also has local domain name (RT-N66U also has it). It is great feature as it makes LAN more peer-to peer friendly and helps in managing local connections. All external DNS requests are forwarded to the DNS servers assigned by the WAN. PS. I was able to find some old post about DNS on this forum. It seems the answer is dnsmasq.