[  479.033454] netdevsim netdevsim501 eni501np1: renamed from eth0
[  479.034904] netdevsim netdevsim738 eni738np1: renamed from eth0
[  479.124201] Could not find device with ifindex 2000 in netnsfd 11
[  479.124330] Could not find netns with fd: 2000
[  479.124389] Cannot link a netdevsim to itself
[  479.124453] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).