Seeing the behavior on ex3400 hundred as well. Binding is in the table. DAI still dropping things.
May 17 09:54:00 2250-ex3400 dc-pfe: DAI FAILED: ARP REQUEST received, interface ge-0/0/36.0 [index 594], vlan-id 36, sender ip/mac 10.4.143.139/ac:87:a3:38:23:5b, receiver ip/mac 10.4.143.139/00:00:00:00:00:00
May 17 09:54:00 2250-ex3400 fpc0 DAI FAILED: ARP REQUEST received, interface ge-0/0/36.0 [index 594], vlan-id 36, sender ip/mac 10.4.143.139/ac:87:a3:38:23:5b, receiver ip/mac 10.4.143.139/00:00:00:00:00:00
cscott@2250-ex3400# run show dhcp-security binding
IP address MAC address Vlan Expires State Interface
10.4.143.139 ac:87:a3:38:23:5b student 617 BOUND ge-0/0/36.0
Switch never snoops the unicast renewals, only the broadcasts, so lease expires almost everytime. Does it matter that relay agent is on same switch? If this is how the feature works, I don't see how it is usuable in production.