![networking - Unable to ping external network from namespace, probably postrouting not working - Unix & Linux Stack Exchange networking - Unable to ping external network from namespace, probably postrouting not working - Unix & Linux Stack Exchange](https://i.stack.imgur.com/yRcxU.jpg)
networking - Unable to ping external network from namespace, probably postrouting not working - Unix & Linux Stack Exchange
![Sean on Twitter: "@b0rk I recently discovered that "ip netns exec ns1 ip addr" can be shortened to "ip -n ns1 addr". This works for any ip command." / Twitter Sean on Twitter: "@b0rk I recently discovered that "ip netns exec ns1 ip addr" can be shortened to "ip -n ns1 addr". This works for any ip command." / Twitter](https://pbs.twimg.com/media/Dp9nnBSUcAEN9t2.jpg)
Sean on Twitter: "@b0rk I recently discovered that "ip netns exec ns1 ip addr" can be shortened to "ip -n ns1 addr". This works for any ip command." / Twitter
![Unix & Linux: 'ip netns exec' command execution using nsid obtained from 'ip netns list-id' - YouTube Unix & Linux: 'ip netns exec' command execution using nsid obtained from 'ip netns list-id' - YouTube](https://i.ytimg.com/vi/2HZhFqiqVjs/maxresdefault.jpg)