[  512.708384] netdevsim netdevsim675 eni675np1: renamed from eth1
[  512.807289] netdevsim netdevsim256 eni256np1: renamed from eth0
[  513.002833] Could not find device with ifindex 2000 in netnsfd 11
[  513.003010] Could not find netns with fd: 2000
[  513.003094] Cannot link a netdevsim to itself
[  513.003205] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).