Kristof Provost 3e603d1ffa pf: Fix panic on vnet jail shutdown with synproxy
When shutting down a vnet jail pf_shutdown() clears the remaining states, which
through pf_clear_states() calls pf_unlink_state().
For synproxy states pf_unlink_state() will send a TCP RST, which eventually
tries to schedule the pf swi in pf_send(). This means we can't remove the
software interrupt until after pf_shutdown().

MFC after:	1 week
2018-07-14 09:11:32 +00:00
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