[  484.285070] netdevsim netdevsim540 eni540np1: renamed from eth1
[  484.285403] netdevsim netdevsim381 eni381np1: renamed from eth0
[  484.370136] Could not find device with ifindex 2000 in netnsfd 11
[  484.370197] Could not find netns with fd: 2000
[  484.370227] Cannot link a netdevsim to itself
[  484.370266] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).