[  827.223095][T14787] netdevsim netdevsim391 eni391np1: renamed from eth0
[  827.231222][T14789] netdevsim netdevsim755 eni755np1: renamed from eth1
[  827.914328][T14775] Could not find device with ifindex 2000 in netnsfd 11
[  827.915358][T14775] Could not find netns with fd: 2000
[  827.915854][T14775] Cannot link a netdevsim to itself
[  827.916407][T14775] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).