[  520.495562] netdevsim netdevsim409 eni409np1: renamed from eth0
[  520.592056] netdevsim netdevsim602 eni602np1: renamed from eth1
[  520.821129] Could not find device with ifindex 2000 in netnsfd 11
[  520.821362] Could not find netns with fd: 2000
[  520.821459] Cannot link a netdevsim to itself
[  520.821581] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).