I am not yet sure if we are talking about the same problem, so here is my current configuration. Unless I add an host definition WITH fixed-address statement to the 10.2.0.0 subnet, too LaptopWLAN won't get an IP address within this network range. JohnStanley Writes: Marcus, I do not think what your trying to do is going to work. Why? "failover peer "intra-net"" . You will need a dhcp.master configuration file on both servers. You running two dhcp servers? Debug with only one server. Her's my opinion. You need to just start out with a simple dhcp.conf, single server and let that be it. On every change you make back it up before a change to it. Get one laptop and don't use any WiFi Security on itand take out the keys defined for it in in the dhcp file. You should not need a host declaration for the laptop if your wantting to get an assigned addy from the 10.2.0.0 range OK, now while on the laptop topic theres a special decleration you can provide for an option "option dhcp-server-identifier x.x.x.x;" What this will accomplish is maybe letting your laptops obtain and address. Certain Operatting systems can not distinguish between the "SYN" and "ACK" proccess of a Unix style ddns. Linux/Unix usualy have no problems with it. This can be seen with something like WireShark or tcp-dump on the network. Using those two would greatly help solve your problem also. Another note your failover dhcp server needs to be the same version as the main one One final note your laptop can be obtaining an address then dropping it because of RF conectivity issues.