[  486.536230] netdevsim netdevsim487 eni487np1: renamed from eth0
[  486.536821] netdevsim netdevsim632 eni632np1: renamed from eth1
[  486.624186] Could not find device with ifindex 2000 in netnsfd 11
[  486.624304] Could not find netns with fd: 2000
[  486.624392] Cannot link a netdevsim to itself
[  486.624502] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).