[  454.817344] netdevsim netdevsim623 eni623np1: renamed from eth1
[  454.817629] netdevsim netdevsim322 eni322np1: renamed from eth0
[  454.905547] Could not find device with ifindex 2000 in netnsfd 11
[  454.905624] Could not find netns with fd: 2000
[  454.905664] Cannot link a netdevsim to itself
[  454.905711] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).