[  486.651215] netdevsim netdevsim623 eni623np1: renamed from eth1
[  486.751465] netdevsim netdevsim363 eni363np1: renamed from eth0
[  487.110006] Could not find device with ifindex 2000 in netnsfd 11
[  487.110143] Could not find netns with fd: 2000
[  487.110212] Cannot link a netdevsim to itself
[  487.110302] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).