Add support for actually sending WCCP return packets via GRE. This MAY be combined by a clever person with the 'key' code recently added, however a cursary glance suggest that it would be safer to just keep the patches as it is unlikely that the two modes would be used together and the separate patch has been extensively tested.
Add support for actually sending WCCP return packets via GRE.
This MAY be combined by a clever person with the 'key' code recently
added, however a cursary glance suggest that it would be safer to just keep
the patches as it is unlikely that the two modes would be used together
and the separate patch has been extensively tested.

Obtained from:	 here and there
MFC after:	1 week

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