[  937.592938][T12471] netdevsim netdevsim335 eni335np1: renamed from eth0
[  937.681581][T12472] netdevsim netdevsim521 eni521np1: renamed from eth1
[  939.293703][T12463] Could not find device with ifindex 2000 in netnsfd 11
[  939.294844][T12463] Could not find netns with fd: 2000
[  939.295703][T12463] Cannot link a netdevsim to itself
[  939.296427][T12463] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).