OpenSSL throws warnings left and right otherwise.  LibreSSL don't
care, but let's just keep this for now, not sure what this might
break otherwise.

Submitted by: Nasantogtokh Amarsaikhan <minerva2991 AT gmail DOT com>

(legacy) use reverse mask instead of reverse address for ddns in dhcpd (https://github.com/opnsense/core/issues/352)

Crash report would pop up twice, that is confusing.

When changing an existing Phase 1 entry, the value for "Hash algorithm" will always be shown as "MD5" in the edit-screen, although it is configured to something else (i.e. AES).

CRITICAL: When configuring a Phase 2 tunnel and setting P2 protocol to ESP, this setting is ignored. The GUI will show an empty value for P2 protocol and the ipsec.conf will not contain the required "esp" line.