Radvd 将广告发送到错误的接口

Question

我有以下 radvd.conf 文件：

interface eth0
{
        AdvSendAdvert on;
        MinRtrAdvInterval 30;
        MaxRtrAdvInterval 100;
        route 2000:e000:0:2::/64
        {
                AdvRoutePreference low;
        };
};

interface tap_tap
{
        AdvSendAdvert on;
        MinRtrAdvInterval 30;
        MaxRtrAdvInterval 100;
        prefix 2000:e000:0:2::/64
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };

        route 2000:e000:0:1::/64
        {
                AdvRouteLifetime infinity;
                AdvRoutePreference high;
        };

};

这个想法是让一个 eth0 接口面向内部网络，并让一个 tap 接口让用户通过 VPN 进行连接。在 eth0 接口上，我想通告路由，以便内部网络中的每个人都可以看到 VPN 客户端，问题是 eth0 通告会被其他接口（如 eth1）接收，这会打乱整个路由：

# radvd configuration generated by radvdump 1.9.2
# based on Router Advertisement from fe80::b076:c0ff:fe83:d38a
# received by interface eth1
#

interface eth1
{
        AdvSendAdvert on;
        # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump
        AdvManagedFlag off;
        AdvOtherConfigFlag off;
        AdvReachableTime 0;
        AdvRetransTimer 0;
        AdvCurHopLimit 64;
        AdvDefaultLifetime 300;
        AdvHomeAgentFlag off;
        AdvDefaultPreference medium;
        AdvSourceLLAddress on;

        route 2000:e000:0:2::/64
        {
                AdvRoutePreference low;
                AdvRouteLifetime 300;
        }; # End of route definition

}; # End of interface definition
#
# radvd configuration generated by radvdump 1.9.2
# based on Router Advertisement from fe80::b076:c0ff:fe83:d38a
# received by interface eth0
#

interface eth0
{
        AdvSendAdvert on;
        # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump
        AdvManagedFlag off;
        AdvOtherConfigFlag off;
        AdvReachableTime 0;
        AdvRetransTimer 0;
        AdvCurHopLimit 64;
        AdvDefaultLifetime 300;
        AdvHomeAgentFlag off;
        AdvDefaultPreference medium;
        AdvSourceLLAddress on;

        route 2000:e000:0:2::/64
        {
                AdvRoutePreference low;
                AdvRouteLifetime 300;
        }; # End of route definition

}; # End of interface definition

奇怪的是，我在某些环境中成功使用了完全相同的设置，但由于某种原因，在某些环境中这种情况突然发生，我是否遗漏了什么？

谢谢你！