[  521.425732] netdevsim netdevsim536 eni536np1: renamed from eth1
[  521.522794] netdevsim netdevsim345 eni345np1: renamed from eth0
[  521.735381] Could not find device with ifindex 2000 in netnsfd 11
[  521.735617] Could not find netns with fd: 2000
[  521.735713] Cannot link a netdevsim to itself
[  521.735836] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).