[  522.826542] netdevsim netdevsim481 eni481np1: renamed from eth0
[  522.923131] netdevsim netdevsim742 eni742np1: renamed from eth1
[  523.179444] Could not find device with ifindex 2000 in netnsfd 11
[  523.179653] Could not find netns with fd: 2000
[  523.179760] Cannot link a netdevsim to itself
[  523.179895] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).