LDP advertises and withdraws all interface IPv6 addresses using the Address/Address-Withdraw message. Both the link-local unicast address and the configured global unicast addresses of an interface are advertised.
All LDP FEC types can be exchanged over a LDP IPv6 LDP session like in LDP IPv4 session.
The LSR does not advertise a FEC for a link-local address and, if received, the LSR does not resolve it.
A IPv4 or IPv6 prefix FEC can be resolved to an LDP IPv6 interface in the same way as it is resolved to an LDP IPv4 interface. The outgoing interface and next-hop are looked up in RTM cache. The next-hop can be the link-local unicast address of the other side of the link or a global unicast address. The FEC is resolved to the LDP IPv6 interface of the downstream LDP IPv6 LSR that advertised the IPv4 or IPv6 address of the next hop.
An mLDP P2MP FEC with an IPv4 root LSR address, and carrying one or more IPv4 or IPv6 multicast prefixes in the opaque element, can be resolved to an upstream LDP IPv6 LSR by checking if the LSR advertised the next-hop for the IPv4 root LSR address. The upstream LDP IPv6 LSR then resolves the IPv4 P2MP FEC to one of the LDP IPV6 links to this LSR.
A PW FEC can be resolved to a targeted LDP IPv6 adjacency with an LDP IPv6 LSR if there is a context for the FEC with local spoke-SDP configuration or spoke-SDP auto-creation from a service such as BGP-AD VPLS, BGP-VPWS or dynamic MS-PW.