IPv6 with Hurricane Electric

• This how-to describes the method for setting up 6in4 tunnel on OpenWrt with Hurricane Electric tunnel broker.

• Provide IPv6 connectivity for LAN clients.
• Access your LAN services remotely without port forwarding.

# Install packages
opkg update
opkg install 6in4
 
# Configuration parameters
HENET_PEER="216.66.80.30"
HENET_IPV6="2001:db8:1f0a:1a2::2/64"
HENET_PFX64="2001:db8:1f0a:2b3::/64"
HENET_PFX48="2001:db8:1f0a::/48"

# Configure firewall
uci rename firewall.@zone[0]="lan"
uci rename firewall.@zone[1]="wan"
uci del_list firewall.wan.network="wan64"
uci add_list firewall.wan.network="wan64"
uci commit firewall
/etc/init.d/firewall restart

# Fetch WAN IP address
. /lib/functions/network.sh
network_flush_cache
network_find_wan NET_IF
network_get_ipaddr NET_ADDR "${NET_IF}"
 
# Configure tunnel
uci -q delete network.wan64
uci set network.wan64="interface"
uci set network.wan64.proto="6in4"
uci set network.wan64.tunlink="wan"
uci set network.wan64.ipaddr="${NET_ADDR}"
uci set network.wan64.peeraddr="${HENET_PEER}"
uci set network.wan64.ip6addr="${HENET_IPV6}"
uci add_list network.wan64.ip6prefix="${HENET_PFX64}"
uci add_list network.wan64.ip6prefix="${HENET_PFX48}"
uci commit network
/etc/init.d/network restart

# Configuration parameters
HENET_TUNID="123456"
HENET_USER="USERNAME"
HENET_UPKEY="UPDATEKEY"
 
# Configure tunnel
uci -q delete network.wan64.ipaddr
uci set network.wan64.tunnelid="${HENET_TUNID}"
uci set network.wan64.username="${HENET_USER}"
uci set network.wan64.updatekey="${HENET_UPKEY}"
uci commit network
/etc/init.d/network restart

uci -q delete network.gw64
uci set network.gw64="route6"
uci set network.gw64.interface="wan64"
uci set network.gw64.target="::/0"
uci commit network
/etc/init.d/network restart