from BGP' NextHop list. Only applicable for BGP sourced
routes and if BGP is included as a route source. This octet
string contains IP addresses. If an IP address
is included in this list, this filter applies to BGP
advertisements whose NEXT_HOP attribute matches this
IP address.
If non-null, The octet string contains one or more 4-octet
IP addresses. If null, this filter applies to BGP
advertisements with any NEXT_HOP attribute.