[  518.132590] netdevsim netdevsim481 eni481np1: renamed from eth0
[  518.230152] netdevsim netdevsim624 eni624np1: renamed from eth1
[  518.477090] Could not find device with ifindex 2000 in netnsfd 11
[  518.477308] Could not find netns with fd: 2000
[  518.477412] Cannot link a netdevsim to itself
[  518.477568] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).