[  489.012104] netdevsim netdevsim434 eni434np1: renamed from eth0
[  489.113490] netdevsim netdevsim685 eni685np1: renamed from eth1
[  489.476227] Could not find device with ifindex 2000 in netnsfd 11
[  489.476418] Could not find netns with fd: 2000
[  489.476511] Cannot link a netdevsim to itself
[  489.476625] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).