[  457.842775] netdevsim netdevsim499 eni499np1: renamed from eth0
[  457.843514] netdevsim netdevsim632 eni632np1: renamed from eth1
[  457.926657] Could not find device with ifindex 2000 in netnsfd 11
[  457.926759] Could not find netns with fd: 2000
[  457.926805] Cannot link a netdevsim to itself
[  457.926879] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).