[  514.963349] netdevsim netdevsim691 eni691np1: renamed from eth1
[  515.060925] netdevsim netdevsim500 eni500np1: renamed from eth0
[  515.247491] Could not find device with ifindex 2000 in netnsfd 11
[  515.247659] Could not find netns with fd: 2000
[  515.247739] Cannot link a netdevsim to itself
[  515.247835] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).