[  507.123871] netdevsim netdevsim281 eni281np1: renamed from eth0
[  507.124738] netdevsim netdevsim711 eni711np1: renamed from eth1
[  507.224643] Could not find device with ifindex 2000 in netnsfd 11
[  507.224724] Could not find netns with fd: 2000
[  507.224764] Cannot link a netdevsim to itself
[  507.224807] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).