[  487.239340] netdevsim netdevsim487 eni487np1: renamed from eth0
[  487.340830] netdevsim netdevsim613 eni613np1: renamed from eth1
[  487.723275] Could not find device with ifindex 2000 in netnsfd 11
[  487.723441] Could not find netns with fd: 2000
[  487.723534] Cannot link a netdevsim to itself
[  487.723667] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).