[  750.508313][T14562] netdevsim netdevsim447 eni447np1: renamed from eth0
[  750.518898][T14564] netdevsim netdevsim667 eni667np1: renamed from eth1
[  751.089905][T14550] Could not find device with ifindex 2000 in netnsfd 11
[  751.090432][T14550] Could not find netns with fd: 2000
[  751.090810][T14550] Cannot link a netdevsim to itself
[  751.091266][T14550] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).