[  486.865419] netdevsim netdevsim512 eni512np1: renamed from eth1
[  486.867210] netdevsim netdevsim294 eni294np1: renamed from eth0
[  486.962771] Could not find device with ifindex 2000 in netnsfd 11
[  486.962915] Could not find netns with fd: 2000
[  486.963024] Cannot link a netdevsim to itself
[  486.963135] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).