Symptom
VRF client moving to exclusion due Ip theft happening while doing l3 roaming
Conditions
Setup :
Platform: 9800-40
image: BLD_POLARIS_DEV_LATEST_20230324_143544
Steps followed :
1) create 2 VRF group having same subnet but mapped to different VRFs says red and green .
2) create 2 Policy profile and assign above vrf to this PP. (vlan carrying above VRF attached) .
3) Now create 2 wlans and map to above PP .
4) Connect 2 clients and seen both clients got the same ip address fine and able to pass ipv4 and ipv6 traffic .
5) Now have one more wlc and form the mobility tunnel with this above wlc .
6) create same wlan and policy profile and map some other vlans but carrying same vrf definitions as above .
7) Now roam client 1 from wlc-1 to wlc2 , seen client able to roam and pass traffic .
8) Now roam client 2 from wlc-1 to wlc2 , seen client able to roam and pass traffic but client -1 moved to exclusion state due to ip address theft .
Tried again same steps and seen issue is repro every time .
Attached the wncd , wncdmgrd btdecode , archive file , running config and WLC console logs from both the wlc .
