[  739.558294][T14449] netdevsim netdevsim257 eni257np1: renamed from eth0
[  739.577390][T14451] netdevsim netdevsim608 eni608np1: renamed from eth1
[  740.140002][T14437] Could not find device with ifindex 2000 in netnsfd 11
[  740.140561][T14437] Could not find netns with fd: 2000
[  740.140929][T14437] Cannot link a netdevsim to itself
[  740.141369][T14437] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).