[  492.530717] netdevsim netdevsim291 eni291np1: renamed from eth0
[  492.627400] netdevsim netdevsim630 eni630np1: renamed from eth1
[  492.870500] Could not find device with ifindex 2000 in netnsfd 11
[  492.870821] Could not find netns with fd: 2000
[  492.870929] Cannot link a netdevsim to itself
[  492.871066] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).