[  474.453485] netdevsim netdevsim408 eni408np1: renamed from eth0
[  474.453816] netdevsim netdevsim720 eni720np1: renamed from eth1
[  474.536163] Could not find device with ifindex 2000 in netnsfd 11
[  474.536263] Could not find netns with fd: 2000
[  474.536319] Cannot link a netdevsim to itself
[  474.536388] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).