pfil hooks can modify packet contents so check if the destination address has been changed when PFIL_HOOKS is enabled and, if it has, arrange for the proper action by ip*_forward.
pfil hooks can modify packet contents so check if the destination
address has been changed when PFIL_HOOKS is enabled and, if it has,
arrange for the proper action by ip*_forward.

Submitted by:	Pyun YongHyeon
Supported by:	FreeBSD Foundation

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