[  484.213022] netdevsim netdevsim491 eni491np1: renamed from eth0
[  484.314077] netdevsim netdevsim611 eni611np1: renamed from eth1
[  484.705613] Could not find device with ifindex 2000 in netnsfd 11
[  484.705807] Could not find netns with fd: 2000
[  484.705906] Cannot link a netdevsim to itself
[  484.706031] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).