In in_pcbconnect_setup(), don't use the cached inp->inp_route unless it is marked as RTF_UP. This appears to fix a crash that was sometimes triggered when dhclient(8) tried to send a packet after an interface had been detatched.
In in_pcbconnect_setup(), don't use the cached inp->inp_route unless
it is marked as RTF_UP. This appears to fix a crash that was sometimes
triggered when dhclient(8) tried to send a packet after an interface
had been detatched.

Reviewed by:	sam

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase