We have an issue that recently showed up on our DHCP server. We've noticed that anything with the 3rd octect above 128 does not hand out a DHCP address properly to the device. For example a scope for 172.17.120.x leases addresses without issue, but when we go to a scope of 172.17.128.x the below image is what we get and the devices don't actually get an address assigned. We've restarted DHCP services, the server itself, reconciled the scope and also tried re-creating the scope with no luck so far. We can see the request go to the server but the server never sends anything back to the device. There is no A/V on the server nor is Windows Firewall turned on. Any insight is greatly appreciated.
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