2020 Apr. 04.
# get network-interface-card NIC=`route | grep -m 1 default | sed 's/[\t ]\+/\t/g' | \cut -f 8` # get default-gateway-address GW_ADRS=`route -n | grep ${NIC} | sed 's/[\t ]\+/\t/g' | cut -f 2 | sort -r | sed -n '1,1p'` # Add GLOBAL-ADDRESS to network-default-route route add -host GLOBAL-ADDRESS gw ${GW_ADRS} dev ${NIC}