[  522.181046] netdevsim netdevsim544 eni544np1: renamed from eth1
[  522.278408] netdevsim netdevsim393 eni393np1: renamed from eth0
[  522.516786] Could not find device with ifindex 2000 in netnsfd 11
[  522.517030] Could not find netns with fd: 2000
[  522.517185] Cannot link a netdevsim to itself
[  522.517328] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).