I have 2x Arista 7050S in MLAG configuration and I configured IPv6 on them, IPv6 unicast routing is enabled, and I assigned 2aXX:XX:1::100/120 to interface vlan 80 and here is the interface vlan config:
description XX ip address 172.XX.XX.41/30 ipv6 address 2aXX:XX:1::101/120 service-policy type pbr input PBR
my problem is IPv6 is working just on one of the MLAG member when I execute show ipv6 route and the other device show this error log:
%IP6ROUTING-4-DAD_FAILED: IPv6 DAD failed on interface VlanX for address 2aXX:XX:1::101
- I have no problem with IPv4. I can set 192.168.1.1/30 on both interface vlan without getting duplicate alert.
What is the problem?