[  473.703521] netdevsim netdevsim497 eni497np1: renamed from eth0
[  473.703794] netdevsim netdevsim757 eni757np1: renamed from eth1
[  473.791820] Could not find device with ifindex 2000 in netnsfd 11
[  473.791947] Could not find netns with fd: 2000
[  473.792051] Cannot link a netdevsim to itself
[  473.792163] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).