172.16.0.0/21 554 match bad netblock 172.16.0.0/21 172.16.8.0/21 554 match bad netblock 172.16.8.0/21 172.16.0.0/16 554 match bad netblock 172.16.0.0/16 172.17.1.1 554 match bad naked address 172.16.1.3/21 whatever 172.16.1.3/33 whatever 172.999.0.0/21 whatever 172.16.1.999 whatever 172.16.1.4 2001:240:5c7:0:2d0:b7ff:fe88:2ca7 match 2001:240:5c7:0:2d0:b7ff:fe88:2ca7 2001:240:5c7::/64 match netblock 2001:240:5c7::/64 1.0.0.0/0 match 0.0.0.0/0 0.0.0.0/0 match 0.0.0.0/0 1::/0 match ::/0 ::/0 match ::/0 [1234 foo [1234]junk bar 172.16.1.3/3x whatever