[   29.645829][  T667] netdevsim netdevsim465 eni465np1: renamed from eth0
[   29.650190][  T670] netdevsim netdevsim541 eni541np1: renamed from eth1
[   30.245003][  T656] Could not find device with ifindex 2000 in netnsfd 11
[   30.245714][  T656] Could not find netns with fd: 2000
[   30.246274][  T656] Cannot link a netdevsim to itself
[   30.246783][  T656] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).