Hello, we have been running DHCP snooping and ARP inspection successfully.
Yesterday I replaced the router attached to our switch and suddenly the switch became flooded with DAI error logs e.g.
Dec 14 14:50:01: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on Gi1/0/37, vlan 10.([54bf.6401.faf7/10.21.7.115/0000.0000.0000/10.21.7.1/
I had to disable ARP inspection and DHCP snooping to allow traffic to pass normally.
Note that the MAC address of the router (10.21.7.1) is showing as 0000.0000.0000.
I am wondering why simply changing the uplink router caused this issue.
Thank you for any help.