[  486.094376] netdevsim netdevsim437 eni437np1: renamed from eth0
[  486.195058] netdevsim netdevsim575 eni575np1: renamed from eth1
[  486.532789] Could not find device with ifindex 2000 in netnsfd 11
[  486.532941] Could not find netns with fd: 2000
[  486.533018] Cannot link a netdevsim to itself
[  486.533127] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).