pfSense

What is the actual IP address entered in the GUI?
And what is the actual rule found in /tmp/rules.debug that is failing? (Try pfctl -f /tmp/rules.debug from the shell)

Source and destination in webgui are both set to 1234:5678:90AB:CDEF:1234:5678:90AB:CDEF: please notice the last colon, its one to many. And should be rejected as a invalid ip.

The rule in rules.debug is this:

pass  in  quick  on $OPT1 inet6 proto tcp  from 1234:5678:90AB:CDEF:1234:5678:90AB:CDEF: port 65432 to 1234:5678:90AB:CDEF:1234:5678:90AB:CDEF: port 65432 tracker 1458757724 flags S/SA keep state  label "USER_RULE" 

[2.3-BETA][root@pfSense.localdomain]/root: pfctl -f /tmp/rules.debug
no IP address found for 1234:5678:90AB:CDEF:1234:5678:90AB:CDEF:
/tmp/rules.debug:188: could not parse host specification
pfctl: Syntax error in config file: pf rules not loaded

Proposed fix for PEAR library: https://github.com/pear/Net_IPv6/pull/14
Same fix to the pfSense copy: https://github.com/pfsense/pfsense/pull/2788

I also submitted a couple of other PRs to PEAR for:
a) Cleanup some comments (some of which are fixed in the pfSense version) and end-of-line crud: https://github.com/pear/Net_IPv6/pull/12
b) Submit a fix for SplitV64 that is in the pfSense code but not upstream: https://github.com/pear/Net_IPv6/pull/13

All of this will (if accepted) make the upstream PEAR version more similar to the pfSense version.