Guidelines and Limitations

The following guidelines and limitations apply to the DAD check feature:

  • IPv6 and GRE tunnels are not supported on IP addresses that are validated by a DAD check.

  • The DAD check does not run on loopback VLANs; an IP address for a loopback VLAN is marked valid and the address is identified in the show ip dad command display with the L flag.

  • The switch MAC address is installed for a VLAN if needed.

  • DAD detects duplicate IPv4 address configured on a VLAN that spans MLAG peer switches only when the solicitation attempts using configure ip dad attempts max_solicitations is more than 1.