[  520.282501] netdevsim netdevsim399 eni399np1: renamed from eth0
[  520.379795] netdevsim netdevsim547 eni547np1: renamed from eth1
[  520.613180] Could not find device with ifindex 2000 in netnsfd 11
[  520.613398] Could not find netns with fd: 2000
[  520.613511] Cannot link a netdevsim to itself
[  520.613634] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).