I have a Linux server with multiple network namespaces defined:
# ip netns list
qdhcp-7dedbd4e-2265-4aa2-baac-add4e341dd18
qdhcp-851379ba-1d51-4e45-8e50-b756e81c0949
qdhcp-a19927c5-83b4-4bb4-a8b8-f21fdb5e004b
qdhcp-b94605ff-b0e2-4cfe-a95e-3dd10208a5fb
... ...
Each namespace contains one or more virtual network adapters - in this case, it's a TAP device:
# ip netns exec qdhcp-7dedbd4e-2265-4aa2-baac-add4e341dd18 ip route
192.168.168.0/24 dev tapda4018ab-b7 proto kernel scope link src 192.168.168.2
169.254.0.0/16 dev tapda4018ab-b7 proto kernel scope link src 169.254.169.254
default via 192.168.168.1 dev tapda4018ab-b7
Now let's say I know the name of the adapter - tapda4018ab-b7
- but I don't know the namespace it belongs to. Is there a way to look it up without checking namespaces one by one? Is there a generic Linux command to do this? Or at least OpenStack Neutron-specific command?