pfSense

Clarify function use and description

Refactor system DNS check. Fix #15127

Add IPv6 localhost nameserver to /etc/resolv.conf. Fix #15139

Improve validation of DNS Resolver Python script. Fixes #15135

Update the years in the Copyright notice.

Correct DHCPv6 lease shortcut section. Fixes #15117

Bail earlier if the LDAP connection fails. Fix #15122

Remove broken input validation

This input validation was originally done in a function that effectively
ignored any input errors. When it was taken out of the function, the
input errors were no longer ignored which resulted in false positives.
This commit removes the respective input validation which effectively...

Strip the prefix size from the VTI remote address. Fix #15124

pfSenseHelpers.js: improve usepost interface. See comment.