This object specifies the IP address of the remote
end of the GRE or MPLS tunnel defined by this SDP.
If sdpTunnelFarEndIpAddress is not set, then
sdpFarEndIpAddress also specifies the remote end of
the TLDP session.
The value of this object must be set to a non-default value
when the sdpDelivery is set to 'gre' or 'mpls' for the
row to become 'active', and can only be changed while the
admin status of the SDP is 'down'.