IPv6 config rule expands to no valid combination ?

[jasperk]

Seriously, did I really get such an answer as shown below?  :-\

[doktornotor]

Dude, you do NOT 1:1 NAT IPv6 like this. WTF. There's NPt for IPv6.

P.S. Filed a bug: https://redmine.pfsense.org/issues/4536

(Note @OP: Fixing that bug will prevent you from configuring similar BS. Meanwhile, kindly remove that nonsense yourself.)