How to create static IPv6 Routes and rules

Environment

Red Hat Enterprise Linux

Issue

-How to create persistent IPv6 routes
-How to I create persistent IPv6 rules

Resolution

• For an IPv6 route create /etc/sysconfig/network-scripts/route6-<interface>

# cat /etc/sysconfig/network-scripts/route6-ethX
<IPv6 destination/prefix> via <IPv6 gateway> dev <interface>

• For an IPv6 rule create /etc/sysconfig/network-scripts/rule6-<interface>

# cat /etc/sysconfig/network-scripts/rule6-ethX
iif <interface> table X
from <IPv6 ip of interface> table X

Root Cause

/etc/sysconfig/network-scripts/ifup-routes

 42 FILES="/etc/sysconfig/network-scripts/route-$1 /etc/sysconfig/network-scripts/route6-$1"
 43 if [ -n "$2" -a "$2" != "$1" ]; then
 44     FILES="$FILES /etc/sysconfig/network-scripts/route-$2 /etc/sysconfig/network-scripts/route6-$2"
 45 fi
 46 
 47 for file in $FILES; do
 48     if [ -f "$file" ]; then
 49         if grep -Eq '^[[:space:]]*ADDRESS[0-9]+=' $file ; then
 50             # new format
 51             handle_file $file ${1%:*}
 52         else
 53             # older format
 54             handle_ip_file $file
 55         fi
 56     fi
 57 done


 67 FILES="/etc/sysconfig/network-scripts/rule-$1 /etc/sysconfig/network-scripts/rule6-$1"
 68 if [ -n "$2" -a "$2" != "$1" ]; then
 69     FILES="$FILES /etc/sysconfig/network-scripts/rule-$2 /etc/sysconfig/network-scripts/rule6-$2"
 70 fi
 71 
 72 for file in $FILES; do
 73     if [ -f "$file" ]; then
 74         handle_ip_file $file
 75     fi
 76 done

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