docker_practice/advanced_network/ptp.md

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#
Docker `docker0`
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`peer`
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2
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```bash
$ docker run -i -t --rm --net=none base /bin/bash
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root@1f1f4c1f931a:/#
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$ docker run -i -t --rm --net=none base /bin/bash
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root@12e343489d2f:/#
```
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```bash
$ docker inspect -f '{{.State.Pid}}' 1f1f4c1f931a
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2989
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$ docker inspect -f '{{.State.Pid}}' 12e343489d2f
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3004
$ sudo mkdir -p /var/run/netns
$ sudo ln -s /proc/2989/ns/net /var/run/netns/2989
$ sudo ln -s /proc/3004/ns/net /var/run/netns/3004
```
`peer`
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```bash
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$ sudo ip link add A type veth peer name B
$ sudo ip link set A netns 2989
$ sudo ip netns exec 2989 ip addr add 10.1.1.1/32 dev A
$ sudo ip netns exec 2989 ip link set A up
$ sudo ip netns exec 2989 ip route add 10.1.1.2/32 dev A
$ sudo ip link set B netns 3004
$ sudo ip netns exec 3004 ip addr add 10.1.1.2/32 dev B
$ sudo ip netns exec 3004 ip link set B up
$ sudo ip netns exec 3004 ip route add 10.1.1.1/32 dev B
```
2 ping
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`--net=none`
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使 `--icc=false`