[  478.584264] netdevsim netdevsim256 eni256np1: renamed from eth0
[  478.585073] netdevsim netdevsim552 eni552np1: renamed from eth0
[  478.671904] Could not find device with ifindex 2000 in netnsfd 11
[  478.672012] Could not find netns with fd: 2000
[  478.672064] Cannot link a netdevsim to itself
[  478.672120] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).