[   13.768783][  T241] netdevsim netdevsim501 eni501np1: renamed from eth0
[   13.875836][  T237] netdevsim netdevsim620 eni620np1: renamed from eth1
[   16.414172][  T231] Could not find device with ifindex 2000 in netnsfd 11
[   16.415872][  T231] Could not find netns with fd: 2000
[   16.417224][  T231] Cannot link a netdevsim to itself
[   16.418973][  T231] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).