Wondering if anyone else has come across this: Deploying an OOB Nac solution and it's helpful to have the NAC receive DHCP requests (it doesn't respond), there can be some good info in there. Works fine for subnets where the DHCP server is reachable through the helper address ex:
ip helper-address ipofwindowsDHCPserver
ip helper-address ipofNAC
Both the DHCP server and the NAC receive the request, the DHCP server replies all is well in the world.
However on subnets that have a local "ip dhcp pool" configured I add the "ip helper-address ipofNAC" however the ipofNAC never receives the packet. The Cisco 6500 serves up the address itself from the local pool (as expected) but ignores the iphelper and won't forward the request on.
Question: Short of serving the IP from a different DHCP server, has anyone come up with a solution for this?
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