[  747.674520][T14436] netdevsim netdevsim278 eni278np1: renamed from eth0
[  747.688035][T14438] netdevsim netdevsim663 eni663np1: renamed from eth1
[  748.263617][T14424] Could not find device with ifindex 2000 in netnsfd 11
[  748.264167][T14424] Could not find netns with fd: 2000
[  748.264542][T14424] Cannot link a netdevsim to itself
[  748.265264][T14424] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).