message: Allow nat64 setup to proceed when not previously installed.
diff: @@ -131,7 +131,7 @@ nat64_uninstall()
  if which update-rc.d; then
  sudo update-rc.d otbr-nat44 remove
  fi
  - sudo rm $NAT44_SERVICE
  + test ! -f $NAT44_SERVICE || sudo rm $NAT44_SERVICE
  }
  nat64_start()
  @@ -145,7 +145,7 @@ nat64_start()
  nat64_stop()
  {
  if which systemctl; then
  - sudo systemctl stop tayga
  - sudo systemctl stop otbr-nat44
  + sudo systemctl stop tayga || true
  + sudo systemctl stop otbr-nat44 || true
  fi
  }
  