[  477.973965] netdevsim netdevsim257 eni257np1: renamed from eth0
[  477.974899] netdevsim netdevsim567 eni567np1: renamed from eth1
[  478.087669] Could not find device with ifindex 2000 in netnsfd 11
[  478.087768] Could not find netns with fd: 2000
[  478.087819] Cannot link a netdevsim to itself
[  478.087882] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).