[  615.584769][ T9795] netdevsim netdevsim337 eni337np1: renamed from eth0
[  615.587837][ T9797] netdevsim netdevsim586 eni586np1: renamed from eth1
[  616.262151][ T9783] Could not find device with ifindex 2000 in netnsfd 11
[  616.262614][ T9783] Could not find netns with fd: 2000
[  616.262970][ T9783] Cannot link a netdevsim to itself
[  616.263380][ T9783] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).