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
if 1.2.0.0/16
if 1.2.3.4/30
1.2.3.3		1.2.3.3 can't happen
1.2.3.4		1.2.3.4 can happen
1.2.3.5		1.2.3.5 can happen
1.2.3.6		1.2.3.6 can happen
1.2.3.7		1.2.3.7 can happen
1.2.3.8		1.2.3.8 can't happen
endif
endif
if !1.2.3.4/30
1.2.3.3		1.2.3.3 can happen
1.2.3.8		1.2.3.8 can happen
endif
if ::f4/126
::f3		::f3 can't happen
::f4		::f4 can happen
::f5		::f5 can happen
::f6		::f6 can happen
::f7		::f7 can happen
::f8		::f8 can't happen
endif
if !::f4/126
::f3		::f3 can happen
::f8		::f8 can happen
endif
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			can't happen
[1234]junk		can't happen
172.16.1.3/3x		can't happen
endif
endif
if 1:2::3:4
if 1:2::3:5
if !
!