[  557.546211] netdevsim netdevsim310 eni310np1: renamed from eth0
[  557.643333] netdevsim netdevsim669 eni669np1: renamed from eth1
[  557.912843] Could not find device with ifindex 2000 in netnsfd 11
[  557.913105] Could not find netns with fd: 2000
[  557.913226] Cannot link a netdevsim to itself
[  557.913359] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).