ip6tables -t nat -A POSTROUTING -o pppoe-wan -j MASQUERADE
5.配置网关，在终端内输入命令
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ip -6 route | grep default
查看当前IPv6默认路由，会显示类似结果 default from (your ipv6) via (gateway) dev eth0.2 proto static metric 512，其中(gateway)括号里的 就是你网络状态下的网关 其中的 fe80::12c3:abff:fe0d:3d3 就是当前网络的默认网关，这一步至关重要 我们需要将其添加到默认路由 终端里输入命令
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route -A inet6 add default gw fe80::12c3:abff:fe0d:3d3 dev pppoe-wan
#!/bin/sh /etc/rc.common # NAT6 init script for OpenWrt // Depends on package: kmod-ipt-nat6
START=55
# Options # -------
# Use temporary addresses (IPv6 privacy extensions) for outgoing connections? Yes: 1 / No: 0 PRIVACY=1
# Maximum number of attempts before this script will stop in case no IPv6 route is available # This limits the execution time of the IPv6 route lookup to (MAX_TRIES+1)*(MAX_TRIES/2) seconds. The default (15) equals 120 seconds. MAX_TRIES=15
# An initial delay (in seconds) helps to avoid looking for the IPv6 network too early. Ideally, the first probe is successful. # This would be the case if the time passed between the system log messages "Probing IPv6 route" and "Setting up NAT6" is 1 second. DELAY=10
# Logical interface name of outbound IPv6 connection # There should be no need to modify this, unless you changed the default network interface names # Edit by Vincent: I never changed my default network interface names, but still I have to change the WAN6_NAME to "wan" instead of "wan6" WAN6_NAME="wan6"
# --------------------------------------------------- # Options end here - no need to change anything below
boot() { [ $DELAY -gt 0 ] && sleep$DELAY logger -t NAT6 "Probing IPv6 route" PROBE=0 COUNT=1 while [ $PROBE -eq 0 ] do if [ $COUNT -gt $MAX_TRIES ] then logger -t NAT6 "Fatal error: No IPv6 route found (reached retry limit)" && exit 1 fi sleep$COUNT COUNT=$((COUNT+1)) PROBE=$(route -A inet6 | grep -c '::/0') done
logger -t NAT6 "Setting up NAT6"
WAN6_INTERFACE=$(uci get "network.$WAN6_NAME.ifname") if [ -z "$WAN6_INTERFACE" ] || [ ! -e "/sys/class/net/$WAN6_INTERFACE/" ] ; then logger -t NAT6 "Fatal error: Lookup of $WAN6_NAME interface failed. Were the default interface names changed?" && exit 1 fi WAN6_GATEWAY=$(route -A inet6 -e | grep "$WAN6_INTERFACE" | awk '/::\/0/{print $2; exit}') if [ -z "$WAN6_GATEWAY" ] ; then logger -t NAT6 "Fatal error: No IPv6 gateway for $WAN6_INTERFACE found" && exit 1 fi LAN_ULA_PREFIX=$(uci get network.globals.ula_prefix) if [ $(echo"$LAN_ULA_PREFIX" | grep -c -E "^([0-9a-fA-F]{4}):([0-9a-fA-F]{0,4}):") -ne 1 ] ; then logger -t NAT6 "Fatal error: IPv6 ULA prefix $LAN_ULA_PREFIX seems invalid. Please verify that a prefix is set and valid." && exit 1 fi
ip6tables -t nat -I POSTROUTING -s "$LAN_ULA_PREFIX" -o "$WAN6_INTERFACE" -j MASQUERADE if [ $? -eq 0 ] ; then logger -t NAT6 "Added IPv6 masquerading rule to the firewall (Src: $LAN_ULA_PREFIX - Dst: $WAN6_INTERFACE)" else logger -t NAT6 "Fatal error: Failed to add IPv6 masquerading rule to the firewall (Src: $LAN_ULA_PREFIX - Dst: $WAN6_INTERFACE)" && exit 1 fi
route -A inet6 add 2000::/3 gw "$WAN6_GATEWAY" dev "$WAN6_INTERFACE" if [ $? -eq 0 ] ; then logger -t NAT6 "Added $WAN6_GATEWAY to routing table as gateway on $WAN6_INTERFACE for outgoing connections" else logger -t NAT6 "Error: Failed to add $WAN6_GATEWAY to routing table as gateway on $WAN6_INTERFACE for outgoing connections" fi
if [ $PRIVACY -eq 1 ] ; then echo 2 > "/proc/sys/net/ipv6/conf/$WAN6_INTERFACE/accept_ra" if [ $? -eq 0 ] ; then logger -t NAT6 "Accepting router advertisements on $WAN6_INTERFACE even if forwarding is enabled (required for temporary addresses)" else logger -t NAT6 "Error: Failed to change router advertisements accept policy on $WAN6_INTERFACE (required for temporary addresses)" fi echo 2 > "/proc/sys/net/ipv6/conf/$WAN6_INTERFACE/use_tempaddr" if [ $? -eq 0 ] ; then logger -t NAT6 "Using temporary addresses for outgoing connections on interface $WAN6_INTERFACE" else logger -t NAT6 "Error: Failed to enable temporary addresses for outgoing connections on interface $WAN6_INTERFACE" fi fi
异次元之旅