[  485.942556] netdevsim netdevsim491 eni491np1: renamed from eth0
[  486.044345] netdevsim netdevsim764 eni764np1: renamed from eth1
[  486.418720] Could not find device with ifindex 2000 in netnsfd 11
[  486.418871] Could not find netns with fd: 2000
[  486.418956] Cannot link a netdevsim to itself
[  486.419045] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).