This feature provides support to perform SHCV checks on the global unicast address (assigned by SLAAC or DHCPv6 IA_NA) and link-local address of a Layer 3 RG or a bridged host. SHCV uses IPv6 NS and NA messages. The configuration is like IPv4 support in SHCV. The host-connectivity-check command is extended to be configured for IPv6 or both IPv4 and IPv6.