[  520.538165] netdevsim netdevsim641 eni641np1: renamed from eth1
[  520.635592] netdevsim netdevsim482 eni482np1: renamed from eth0
[  520.890786] Could not find device with ifindex 2000 in netnsfd 11
[  520.891028] Could not find netns with fd: 2000
[  520.891135] Cannot link a netdevsim to itself
[  520.891321] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).