[  514.744664] netdevsim netdevsim400 eni400np1: renamed from eth0
[  514.842250] netdevsim netdevsim513 eni513np1: renamed from eth1
[  515.065840] Could not find device with ifindex 2000 in netnsfd 11
[  515.066011] Could not find netns with fd: 2000
[  515.066090] Cannot link a netdevsim to itself
[  515.066187] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).