[  524.179053] netdevsim netdevsim337 eni337np1: renamed from eth0
[  524.276311] netdevsim netdevsim668 eni668np1: renamed from eth1
[  524.522683] Could not find device with ifindex 2000 in netnsfd 11
[  524.522874] Could not find netns with fd: 2000
[  524.522948] Cannot link a netdevsim to itself
[  524.523041] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).