[  491.909913] netdevsim netdevsim336 eni336np1: renamed from eth0
[  492.011160] netdevsim netdevsim745 eni745np1: renamed from eth1
[  492.399928] Could not find device with ifindex 2000 in netnsfd 11
[  492.400075] Could not find netns with fd: 2000
[  492.400153] Cannot link a netdevsim to itself
[  492.400272] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).