DHCP assigining incorrect scope to device

[localzuk]

I have a HP pc which is being authenticated via its MAC address and assigned to vlan 2 by my HP 5406zl switch. I have confirmed all this works.

Now, when it does a DHCP discover request, the router passes it on to the DHCP server like it should. However, the server then offers an IP from the wrong scope.

VLAN 2 has the range 10.5.140.1 - 10.5.140.126, with the ip of the VLAN/router being 10.5.140.1 and the netmask being 255.255.255.128

VLAN 1 has the range 10.5.143.1 - 10.5.143.254, with the ip of the VLAN/router being 10.5.143.1 and the netmask being 255.255.255.0

When I inspect the dhcp offer packet, it has the relay agent IP as being 10.5.140.1 also.

What is going wrong?

[localzuk]

It doesn't seem to be having this problem anywhere else though... Just this one PC is having trouble...