/gateway/{if(found){gateway=$NF}}
/dns-nameservers/{if(found){dnsnameservers=$NF}}
END{print address" "netmask" "broadcast" "gateway" "dnsnameservers}' /etc/network/interfaces >"$TMP"
- read IP NM BC DG <"$TMP"
+ read IP NM BC DG NS <"$TMP"
rm -f "$TMP"
fi