[  515.218201] netdevsim netdevsim497 eni497np1: renamed from eth0
[  515.314717] netdevsim netdevsim517 eni517np1: renamed from eth1
[  515.582732] Could not find device with ifindex 2000 in netnsfd 11
[  515.582928] Could not find netns with fd: 2000
[  515.583022] Cannot link a netdevsim to itself
[  515.583129] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).