[  472.160807] netdevsim netdevsim257 eni257np1: renamed from eth0
[  472.161707] netdevsim netdevsim710 eni710np1: renamed from eth0
[  472.235011] Could not find device with ifindex 2000 in netnsfd 11
[  472.235078] Could not find netns with fd: 2000
[  472.235120] Cannot link a netdevsim to itself
[  472.235164] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).