[  486.625238] netdevsim netdevsim450 eni450np1: renamed from eth0
[  486.625651] netdevsim netdevsim652 eni652np1: renamed from eth1
[  486.718185] Could not find device with ifindex 2000 in netnsfd 11
[  486.718282] Could not find netns with fd: 2000
[  486.718337] Cannot link a netdevsim to itself
[  486.718390] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).