[  489.838628] netdevsim netdevsim581 eni581np1: renamed from eth1
[  489.935777] netdevsim netdevsim351 eni351np1: renamed from eth0
[  490.142620] Could not find device with ifindex 2000 in netnsfd 11
[  490.142804] Could not find netns with fd: 2000
[  490.142893] Cannot link a netdevsim to itself
[  490.142992] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).