pass in pointer to m_head to re_encap because m_defrag could free the original mbuf causing a free'd mbuf passed to bpf later and panic'ing the system..  This should only effect jumbo frames.
pass in pointer to m_head to re_encap because m_defrag could free the
original mbuf causing a free'd mbuf passed to bpf later and panic'ing the
system..  This should only effect jumbo frames.

MFC after:	5 days

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