table_set_default ipv4_lpm drop
table_add ipv4_lpm ipv4_forward 10.0.2.2/32  => 00:00:00:00:02:02 2
table_add ipv4_lpm ipv4_forward 10.0.2.22/32 => 00:00:00:00:02:16 1
table_add ipv4_lpm ipv4_forward 10.0.1.0/24 => 00:00:00:01:03:00 3
table_add ipv4_lpm ipv4_forward 10.0.3.0/24 => 00:00:00:03:03:00 4