我有一个带有 2 个网络接口（一个是 VLAN）的 MBIM LTE 调制解调器，我正在尝试配置两个连接，因为 IP、网关等是通过 MBIM 协议获取的，因此路由需要手动完成。谷歌搜索并在这个论坛中搜索了很多，解决方案似乎是这个，即使用第二和第三路由表和路由规则。
这种解决方案通常建议用于 eth 网络设备，但我认为应该没有区别，但是我无法使两个网络一起工作，并且在最好的情况下我只能从第一个接口 ping，而 vlan 则不能完全无法 ping 通。
我的配置如下：
假设 MBIM 协议为两个连接提供以下数据
Session 1
IP=10.39.187.213/24
GW=10.39.187.1
Session 2
IP=5.91.204.208/24
GW=5.91.204.1
这是路由
ip link add link wwp0s20u1u1u4 name wwp0s20u1u1u4.0 type vlan id 0
ip set link wwp0s20u1u1u4 up
ip route show table main
default
nexthop via 10.39.187.1 dev wwp0s20u1u1u4 weight 1
nexthop via 5.91.204.1 dev wwp0s20u1u1u4.0 weight 1
5.91.204.0/24 dev wwp0s20u1u1u4.0 proto kernel scope link src 5.91.204.208
10.39.187.0/24 dev wwp0s20u1u1u4 proto kernel scope link src 10.39.187.213
ip route show table second
default via 10.39.187.1 dev wwp0s20u1u1u4
10.39.187.0/24 dev wwp0s20u1u1u4 scope link src 10.39.187.213
ip route show table third
default via 5.91.204.1 dev wwp0s20u1u1u4.0
5.91.204.0/24 dev wwp0s20u1u1u4.0 scope link src 5.91.204.208
ip rule
0: from all lookup local
32762: from all to 5.91.204.0/24 lookup third
32763: from 5.91.204.0/24 lookup third
32764: from all to 10.39.187.0/24 lookup second
32765: from 10.39.187.0/24 lookup second
32766: from all lookup main
32767: from all lookup default
这是 ping 的结果
ping -I wwp0s20u1u1u4 8.8.8.8 -c 4
PING 8.8.8.8 (8.8.8.8) from 10.39.187.213 wwp0s20u1u1u4: 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=42 time=121 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=42 time=79.4 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=42 time=111 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=42 time=110 ms
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3002ms
rtt min/avg/max/mdev = 79.458/105.839/121.511/15.807 ms
ping -I wwp0s20u1u1u4.0 8.8.8.8 -c 4
PING 8.8.8.8 (8.8.8.8) from 5.91.204.208 wwp0s20u1u1u4.0: 56(84) bytes of data.
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3023ms
更新：对于公开 2 个 RMNET 的 QMI 调制解调器，可以使用相同的配置。我想知道如何调试这个用例的 VLAN 网络。