[  521.271621] netdevsim netdevsim411 eni411np1: renamed from eth0
[  521.367667] netdevsim netdevsim648 eni648np1: renamed from eth1
[  521.578261] Could not find device with ifindex 2000 in netnsfd 11
[  521.578419] Could not find netns with fd: 2000
[  521.578490] Cannot link a netdevsim to itself
[  521.578577] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).