[   29.883323] netdevsim netdevsim271 eni271np1: renamed from eth0
[   29.980087] netdevsim netdevsim623 eni623np1: renamed from eth1
[   30.220209] Could not find device with ifindex 2000 in netnsfd 11
[   30.220408] Could not find netns with fd: 2000
[   30.220505] Cannot link a netdevsim to itself
[   30.220632] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).