MFC r273904:
  Use in_localip() instead of handmade implementation.

Sponsored by:	Yandex LLC
MFC r274193:
  When mode isn't explicitly specified (wildcard) and inner protocol isn't
  IPv4 or IPv6, assume it is the transport mode.

Sponsored by:	Yandex LLC
MFC r260800:
Fix a regression introduced in r237618

MFC r260801:
Re-work r260800 to include other signals which start with 'I'
such as ILL, INFO etc.

Sponsored by:	Multiplay
MFC r264852

Silence compiler warning

Sponsored by:	Multiplay