[  491.420059] netdevsim netdevsim378 eni378np1: renamed from eth0
[  491.516718] netdevsim netdevsim630 eni630np1: renamed from eth1
[  491.749220] Could not find device with ifindex 2000 in netnsfd 11
[  491.749536] Could not find netns with fd: 2000
[  491.749646] Cannot link a netdevsim to itself
[  491.749779] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).