[  484.449017] netdevsim netdevsim503 eni503np1: renamed from eth0
[  484.449947] netdevsim netdevsim614 eni614np1: renamed from eth1
[  484.536515] Could not find device with ifindex 2000 in netnsfd 11
[  484.536599] Could not find netns with fd: 2000
[  484.536643] Cannot link a netdevsim to itself
[  484.536692] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).