[  521.359457] netdevsim netdevsim544 eni544np1: renamed from eth1
[  521.456470] netdevsim netdevsim424 eni424np1: renamed from eth0
[  521.703608] Could not find device with ifindex 2000 in netnsfd 11
[  521.703803] Could not find netns with fd: 2000
[  521.703901] Cannot link a netdevsim to itself
[  521.704041] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).