I have a VLAN, 101, which is the only vlan on the network that is not configured to receive dhcp ip on the nodes. Yet, for some reason, it is receiving ip address, sent by the dhcp server. The ip address that are coming in are from another vlan. I have checked the core switch where the vlan interface for 101 is configured and there is no "ip helper address" setup. I check the dchp server and checked the scope, that vlan 101 is receiving the ip addresses, to make sure that the router scope option is not set to the vlan 101 interface, and it's not. As a temporary solution I am only allowing vlan 101 to enter into vlan 101. But can anyone tell me why all of a sudden IP address are coming into the vlan 101, which is not configured to receive ip addresses? I also had the dchp server rebooted.