This contains the value of the peer node address of the PW or PE maintenance protocol entity, and it should contain a value of 0 if not relevant, such as for manual configuration of the VC. This is the actual IP address of the remote PE router this pseudowire signals to, the destination the local router's LDP or other signaling session targets to negotiate labels for this specific VC, and it should be left at 0 for manually configured VCs where no signaling peer exists at all. For example, a pseudowire configured to signal with a remote PE at 192.0.2.1 would show that address here, while a purely manually configured VC with statically assigned labels on both ends would correctly show 0 in this field.