netcat6 can be used in neatx as well. netcat6 is the ipv6 alternative for netcat and is there in the portage. netcat and netcat6 block each other Reproducible: Always
the fix is too simply include netcat6 as the alternate
Thanks for the report! netcat6 is now yet another netcat allowed in neatx (using /usr/bin/nc6, as /usr/bin/nc symlink was only added in latest version), committed in CVS without revbump