[  489.055669] netdevsim netdevsim438 eni438np1: renamed from eth0
[  489.056014] netdevsim netdevsim623 eni623np1: renamed from eth1
[  489.150429] Could not find device with ifindex 2000 in netnsfd 11
[  489.150515] Could not find netns with fd: 2000
[  489.150556] Cannot link a netdevsim to itself
[  489.150609] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).