pfSense

Simplify mode parameter validation

Remove redundant check since pkgcancel is never set

Validate mode parameter and use sanitized variable on other places

This needs a newline

Set keepalive_timeout 0 where captive portal in use, and update otherwise to nginx's current default of 75. Ticket #6421

Fix save and reset buttons on status_lb_pool.php. Ticket #6254

Fix #6440 RADIUS issued IPs

This is a checkbox - the state in the config is stored as set or not set.
This should fix the reported issue. I don;t have a system right now to test, but the bug seems obvious.

Allow - and _ in sysctl values. Ticket #6438

Don't override type so changing it is possible. Ticket #6439

Allow - in TFTP Server field. Ticket #6433