[  489.542053] netdevsim netdevsim643 eni643np1: renamed from eth1
[  489.542362] netdevsim netdevsim425 eni425np1: renamed from eth0
[  489.645045] Could not find device with ifindex 2000 in netnsfd 11
[  489.645192] Could not find netns with fd: 2000
[  489.645329] Cannot link a netdevsim to itself
[  489.645475] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).