[  472.483503] netdevsim netdevsim491 eni491np1: renamed from eth0
[  472.483933] netdevsim netdevsim557 eni557np1: renamed from eth1
[  472.562694] Could not find device with ifindex 2000 in netnsfd 11
[  472.562790] Could not find netns with fd: 2000
[  472.562834] Cannot link a netdevsim to itself
[  472.562885] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).