[  495.817742] netdevsim netdevsim457 eni457np1: renamed from eth0
[  495.913740] netdevsim netdevsim743 eni743np1: renamed from eth1
[  496.153653] Could not find device with ifindex 2000 in netnsfd 11
[  496.153976] Could not find netns with fd: 2000
[  496.154069] Cannot link a netdevsim to itself
[  496.154186] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).