How to use match

match(f=v): match packets whose field f has value v

builtin fields are FIELD TYPE EXAMPLE switch int 4 inport int 3 outport int 2 srcmac MAC MAC('00:00:00:00:00:01') dstmac MAC MAC('00:00:00:00:00:03') srcip IP,string IP('10.0.1.1'), '10.0.0/24' dstip IP,string IP('10.0.1.2'), '10.0.1/24' tos int 0 srcport int 80 dstport int 8080 ethtype int 1 protocol int 7 vlan_id int 0 vlan_pcp int 0

e.g., match(srcip=IP("1.1.1.2")) match(srcmac=MAC("00:00:00:00:00:01")) match(switch=4)