from BGP' Peer list. Only applicable for BGP sourced
routes and if BGP is included as a route source. This octet
string contains the IP address of one or more BGP peers.
If a BGP peer is included in this list, this filter applies
to BGP advertisements authored by that router.
If non-null, The octet string contains one or more 4-octet
IP addresses. If null, this filter applies to BGP
advertisements from any router.