[  483.600773] netdevsim netdevsim400 eni400np1: renamed from eth0
[  483.702188] netdevsim netdevsim638 eni638np1: renamed from eth1
[  484.025174] Could not find device with ifindex 2000 in netnsfd 11
[  484.025303] Could not find netns with fd: 2000
[  484.025366] Cannot link a netdevsim to itself
[  484.025454] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).