from BGP' AS list. Only applicable for BGP sourced
routes and if BGP is included as a route source. This octet
string contains Autonomous System Numbers. If an AS number
is included in this list, this filter applies to BGP
advertisements received from BGP peers in that AS.
If non-null, The octet string contains one or more 2-octet
AS numbers. If null, this filter applies to BGP advertisements
from peers in any AS.