[  515.180927] netdevsim netdevsim257 eni257np1: renamed from eth0
[  515.278935] netdevsim netdevsim704 eni704np1: renamed from eth1
[  515.503216] Could not find device with ifindex 2000 in netnsfd 11
[  515.503388] Could not find netns with fd: 2000
[  515.503475] Cannot link a netdevsim to itself
[  515.503577] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).