The following bug has been logged on the website:
Bug reference: 14198
Logged by: Stefan Kaltenbrunner
Email address: stefan(at)kaltenbrunner(dot)cc
PostgreSQL version: 9.5.3
Operating system: Debian Linux
Description:
Hi all!
IPv6 address validation seems to be a "tad" broken in all current
releases:
mastermind=# select '99:99:99:99::99:99:99:99:99:zz'::inet;
inet
::/0
(1 row)
mastermind=# select '99:99:99:99::99:99:99:99:aa::99'::inet;
inet
::/0
(1 row)
mastermind=# select '99:99:99:99::99:99:99:99:99::99'::inet;
inet
::/0
(1 row)