MFC rev. 1.4:
MFC rev. 1.4:

  Use more rc.subr(8) features.
  Skip useless work when ${natd_interface} is unset.
  Double quote user-supplied vars unless there is a reason not to.

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