3 # set individualized routing table and policy for each network device
9 # IFACE physical name of the interface being processed
10 # METHOD method of the interface (e.g., static)
11 # MODE start if run from ifup, stop if run from ifdown
12 # PHASE as per MODE, but with finer granularity, distinguishing the pre-
13 # up, post-up, pre-down and post-down phases.
15 # optional arugument to set default gateway manually
18 TID=`/sbin/ip addr show dev ${IFACE} | grep -w ${IFACE}: | tr -s ' ' | cut -d : -f 1`
20 if [ "${PHASE}" = "post-down" ]; then
21 # delete routing table and policy and exit
22 ## routing table is automatically flushed, so 'route flush' can be removed
23 /sbin/ip route flush table ${TID}
24 ## device has no longer any IP addr, so do not use IPADDR
25 /sbin/ip rule del table ${TID} priority ${TID}
26 /sbin/ip route flush cache
27 echo "remove routing table and policy for ${IFACE}"
32 # get IP address, network mask, default gateway info
33 IPADDR=`/sbin/ip addr show dev ${IFACE} | grep -w inet | tr -s ' ' | cut -d ' ' -f 3 | cut -d / -f 1`
34 if [ -z "${IPADDR}" ]; then
35 # fail to bind IP address to device
36 echo "${IFACE} has no IP address."
39 NETWORK=`/sbin/ip route show dev ${IFACE} | grep -w ${IPADDR} | tr -s ' ' | cut -d ' ' -f 1`
41 if [ -z "${GATEWAY}" ]; then
42 GATEWAY=`/sbin/ip route show dev ${IFACE} | grep -w default | tr -s ' ' | cut -d ' ' -f 3`
44 if [ -z "${GATEWAY}" ]; then
45 GATEWAY=`/sbin/ip route | grep -w default | tr -s ' ' | cut -d ' ' -f 3`
46 # this may add wrong default route especially on RHEL
51 /sbin/ip route add ${NETWORK} dev ${IFACE} table ${TID}
52 /sbin/ip route add default via ${GATEWAY} dev ${IFACE} table ${TID}
55 /sbin/ip rule add from ${IPADDR} table ${TID} priority ${TID}
57 /sbin/ip route flush cache
58 echo "add routing table and policy for ${IFACE} on table ${TID}"