☰

如何在 Linux 中取消设置 nic 的网络命名空间？

tag-icon • tag-icon linux networking
如何在 Linux 中取消设置 nic 的网络命名空间？

我知道ip link set tap0 netns XX可以在 Linux 中将命名空间XX归于设备tap0。但如果我想恢复tap0公共（未命名）命名空间，我该怎么做？

答案1

首先我们列出接口

[root@host ~]# ip link list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 52:54:00:4e:ca:5c brd ff:ff:ff:ff:ff:ff
3: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether e6:da:05:95:2f:4e brd ff:ff:ff:ff:ff:ff
4: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether 4a:73:df:f1:87:26 brd ff:ff:ff:ff:ff:ff

我们将设备 veth1 放入 netns testns

[root@host ~]# ip link set veth1 netns testns

我们可以验证它是否在

[root@host ~]# ip link list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 52:54:00:4e:ca:5c brd ff:ff:ff:ff:ff:ff
4: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether 4a:73:df:f1:87:26 brd ff:ff:ff:ff:ff:ff

[root@host ~]# ip netns exec testns ip link list
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
3: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether e6:da:05:95:2f:4e brd ff:ff:ff:ff:ff:ff

然后我们将其放回默认网络

[root@host ~]# ip netns exec testns ip link set veth1 netns 1

我们确认它已经回来了

[root@host ~]# ip netns exec testns ip link list
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
[root@host ~]# ip link list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 52:54:00:4e:ca:5c brd ff:ff:ff:ff:ff:ff
3: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether e6:da:05:95:2f:4e brd ff:ff:ff:ff:ff:ff
4: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether 4a:73:df:f1:87:26 brd ff:ff:ff:ff:ff:ff

在您的案例中，您必须用 tap0 替换 veth1。事实上：

 [root@host ~]# ip netns exec testns ip link set tap0 netns 1

相关内容