I'm writing this as a result of a bug [1] filed by a Debian user that the
cidr_table man page wasn't completely clear about acceptable notation for
IPv6. I find it's clear enough myself, but in light of the user confusion I
do think including an IPv6 address in the example might help.
Please see the attached trivial patch for consideration. It uses the IETF
sanctioned example IPv6 addresses, because why not?
Scott K
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=832803
--- postfix/man/cidr_table.5 2016-03-09 17:58:40.008427843 -0500
+++ postfix/man/cidr_table.5.new 2016-07-29 17:17:55.453523660 -0400
@@ -82,6 +82,8 @@
# before more general blacklist entries.
192.168.1.1 OK
192.168.0.0/16 REJECT
+ 2001:db8::1 OK
+ 2001:db8::/32 REJECT
.fi
.SH "SEE ALSO"
.na
