[  823.798159][T14604] netdevsim netdevsim421 eni421np1: renamed from eth0
[  823.809374][T14606] netdevsim netdevsim679 eni679np1: renamed from eth1
[  824.427789][T14592] Could not find device with ifindex 2000 in netnsfd 11
[  824.429205][T14592] Could not find netns with fd: 2000
[  824.429852][T14592] Cannot link a netdevsim to itself
[  824.430786][T14592] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).