[  472.749518] netdevsim netdevsim256 eni256np1: renamed from eth0
[  472.751996] netdevsim netdevsim700 eni700np1: renamed from eth1
[  472.818912] Could not find device with ifindex 2000 in netnsfd 11
[  472.818969] Could not find netns with fd: 2000
[  472.818998] Cannot link a netdevsim to itself
[  472.819033] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).