Nat-64 on Asuswrt?

[meliodas]

Interested in see the script if you can post it

Sure..

#!/bin/sh

rtr_pref6=$(nvram get ipv6_prefix)
rtr_ipaddr=$(nvram get lan_ipaddr_rt)
tayga_conf='/jffs/configs/tayga/default.conf'
map_file='/tmp/db/tayga/dynamic.map'
wkp='64:ff9b::/96'

# NOTE: Only run this script when your PPPoE connection is UP.
# You can verify with the commands: ifconfig br0 && ifconfig ppp0 && ping6 dns.google

case "$1" in
  start)
    ## Setup tayga configuration
    touch $tayga_conf
    echo "tun-device nat64" > $tayga_conf
    echo "ipv4-addr 10.64.64.1" >> $tayga_conf    
    echo "prefix $wkp" >> $tayga_conf    
    echo "ipv6-addr ${rtr_pref6}64" >> $tayga_conf
    echo "dynamic-pool 10.64.64.0/24" >> $tayga_conf
    echo "data-dir /tmp/db/tayga" >> $tayga_conf
    ## The 'ipv4-addr' and 'dynamic-pool' are different addresses. They are _NOT_ the same as your LAN addresses.
    ## For 'ipv4-addr' and 'dynamic-pool', you can assign a separate network address that is not in used by anything.

    # configure tun interface
    echo "=== Making tun device: nat64"
    tayga --mktun
    ip addr flush nat64
    ip link set nat64 up

    ip a a ${rtr_ipaddr} dev nat64 # this must be the same as your LAN IP address.
    ip r a 10.64.64.0/24 dev nat64

    ip -6 a a ${rtr_pref6}64 dev nat64 # this is a separate address taken from your /64 DHCPv6-PD prefix.
    ip -6 r d $wkp
    ip -6 r a $wkp dev nat64

    # Add this rule at the top of the FORWARD chain or else NAT64 traffic will get blocked by the last DROP rule.
    iptables -I FORWARD -i nat64 -j ACCEPT

    # Start Tayga
    tayga -c $tayga_conf
    ;;
  stop)
    killall tayga
    iptables -D FORWARD -i nat64 -j ACCEPT
    ip addr flush nat64
    ip link del nat64
    # clear nat64 dynamic map
    [ -s $map_file ] && rm $map_file
    [ -f $tayga_conf ] && rm -f $tayga_conf
    ;;
  *)
    echo "Usage: $0: < start | stop >"
    exit 1
    ;;
esac
exit 1

 

[meliodas]

Btw, I've since moved to using Jool instead of Tayga on a seperate machine.