[  514.836538] netdevsim netdevsim600 eni600np1: renamed from eth1
[  514.934080] netdevsim netdevsim257 eni257np1: renamed from eth0
[  515.180828] Could not find device with ifindex 2000 in netnsfd 11
[  515.181001] Could not find netns with fd: 2000
[  515.181074] Cannot link a netdevsim to itself
[  515.181159] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).