如何将IPv6流量从tun0接口转发到eth0接口？
使用ifconfig：
eth0 Link encap:Ethernet HWaddr 00:16:3E:12:77:54
inet addr:208.111.39.160 Bcast:208.111.39.255 Mask:255.255.255.0
inet6 addr: 2607:f740:0:3f::eda/64 Scope:Global
inet6 addr: fe80::216:3eff:fe12:7754/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:65590 errors:0 dropped:499 overruns:0 frame:0
TX packets:40111 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:13246038 (12.6 MiB) TX bytes:28807669 (27.4 MiB)
Interrupt:29
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.8.0.1 P-t-P:10.8.0.2 Mask:255.255.255.255
inet6 addr: 2607:f740:44:22::8/64 Scope:Global
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:16876 errors:0 dropped:0 overruns:0 frame:0
TX packets:16504 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:2235766 (2.1 MiB) TX bytes:7680377 (7.3 MiB)
我已启用转发：
[root@baobei ~]# sysctl net.ipv6.conf.all.forwarding net.ipv6.conf.all.forwarding = 1
防火墙：
ip6tables -F INPUT ip6tables -F FORWARD ip6tables -F OUTPUT ip6tables -F ip6tables -P INPUT ACCEPT ip6tables -P FORWARD ACCEPT ip6tables -P OUTPUT ACCEPT echo -n "1" >/proc/sys/net/ipv6/conf/all/forwarding echo -n "1" >/proc/sys/net/ipv6/conf/all/proxy_ndp echo -n "0" >/proc/sys/net/ipv6/conf/all/autoconf echo -n "0" >/proc/sys/net/ipv6/conf/all/accept_ra ip6tables -A INPUT -p icmpv6 -j ACCEPT ip6tables -A FORWARD -m state --state NEW -i tun0 -o eth0 -s 2607:f740:44:22::/64 -j ACCEPT ip6tables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
路线：
unreachable ::/96 dev lo metric 1024 error -101 unreachable ::ffff:0.0.0.0/96 dev lo metric 1024 error -101 unreachable 2002:a00::/24 dev lo metric 1024 error -101 unreachable 2002:7f00::/24 dev lo metric 1024 error -101 unreachable 2002:a9fe::/32 dev lo metric 1024 error -101 unreachable 2002:ac10::/28 dev lo metric 1024 error -101 unreachable 2002:c0a8::/32 dev lo metric 1024 error -101 unreachable 2002:e000::/19 dev lo metric 1024 error -101 2607:f740:0:3f::/64 dev eth0 proto kernel metric 256 2607:f740:44:22::/64 dev tun0 proto kernel metric 256 unreachable 3ffe:ffff::/32 dev lo metric 1024 error -101 fe80::/64 dev eth0 proto kernel metric 256 fe80::/64 dev tun0 proto kernel metric 256 default via 2607:f740:0:3f::1 dev eth0 metric 1
但是,到达tun0接口的ipv6数据包不会路由到eth0接口.感谢您的帮助,建议.
解决方法
这是一个简单的路由问题.您的路由表没有任何通过tun0接口引导流量的路由,因此不会以任何方式转发.
我知道你正在使用OpenVPN.据我所知,对OpenVPN的IPv6支持不包括与redirect-gateway选项相当的IPv6.您可能需要使用从服务器推送的route-ipv6语句添加自己的路由.
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