参考URL:

https://blog.csdn.net/chengqiuming/article/details/80140768

一,启用Linux的路由转发功能。

二,新建veth pair

三,新建netnamespace

四,将不同的veth放入不同的Ns

五,手工增加路由表

六,测试

[root@localhost ~]# ip netns list
[root@localhost ~]# ip link add tap1 type veth peer name tap1_peer
[root@localhost ~]# ip link add tap2 type veth peer name tap2_peer
[root@localhost ~]# ip netns add ns1
[root@localhost ~]# ip netns add ns2
[root@localhost ~]# ip link set tap1 netns ns1
[root@localhost ~]# ip link set tap2 netns ns2
[root@localhost ~]# ip addr add local 192.168.100.1/24 dev tap1_peer
[root@localhost ~]# ip addr add local 192.168.200.1/24 dev tap2_peer
[root@localhost ~]# ip netns exec ns1 ip addr add local 192.168.100.2/24 dev tap1
[root@localhost ~]# ip netns exec ns2 ip addr add local 192.168.200.2/24 dev tap2
[root@localhost ~]# ip link set tap1_peer up
[root@localhost ~]# ip link set tap2_peer up
[root@localhost ~]# ip netns exec ns1 ip link set tap1 up
[root@localhost ~]# ip netns exec ns2 ip link set tap2 up
[root@localhost ~]# ip netns exec ns1 route add -net 192.168.200.0 netmask 255.255.255.0 gw 192.168.100.1
[root@localhost ~]# ip netns exec ns2 route add -net 192.168.100.0 netmask 255.255.255.0 gw 192.168.200.1
01-04 09:33