[  772.284911][T14733] netdevsim netdevsim272 eni272np1: renamed from eth0
[  772.300666][T14732] netdevsim netdevsim515 eni515np1: renamed from eth1
[  772.849216][T14721] Could not find device with ifindex 2000 in netnsfd 11
[  772.849855][T14721] Could not find netns with fd: 2000
[  772.850356][T14721] Cannot link a netdevsim to itself
[  772.851196][T14721] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).