[  565.561216] netdevsim netdevsim263 eni263np1: renamed from eth0
[  565.658963] netdevsim netdevsim554 eni554np1: renamed from eth1
[  565.895254] Could not find device with ifindex 2000 in netnsfd 11
[  565.895426] Could not find netns with fd: 2000
[  565.895506] Cannot link a netdevsim to itself
[  565.895592] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).