[  490.536086] netdevsim netdevsim457 eni457np1: renamed from eth0
[  490.636904] netdevsim netdevsim619 eni619np1: renamed from eth1
[  490.970723] Could not find device with ifindex 2000 in netnsfd 11
[  490.970861] Could not find netns with fd: 2000
[  490.970930] Cannot link a netdevsim to itself
[  490.971023] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).