[  484.383760] netdevsim netdevsim290 eni290np1: renamed from eth0
[  484.384200] netdevsim netdevsim512 eni512np1: renamed from eth1
[  484.471110] Could not find device with ifindex 2000 in netnsfd 11
[  484.471200] Could not find netns with fd: 2000
[  484.471244] Cannot link a netdevsim to itself
[  484.471305] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).