Move the IPsec settings from System > Advanced, Misc tab to "Advanced Settings" tab under VPN > IPsec.
Make sure the correct interface is selected once the config has been saved. Fixes #3620
Make sure the correct interface is selected once the config has been saved for the DNS forwarder
Make sure to actually configure the outgoing query interfaces if selected.
Its long overdue the ez-ipupdate.cache file
Don't refuse to delete a bridge in the GUI just because its bridge interface doesn't exist, just log that it doesn't exist and don't attempt to ifconfig destroy it, delete it from config