[  520.514545] netdevsim netdevsim466 eni466np1: renamed from eth0
[  520.610580] netdevsim netdevsim639 eni639np1: renamed from eth1
[  520.859078] Could not find device with ifindex 2000 in netnsfd 11
[  520.859301] Could not find netns with fd: 2000
[  520.859383] Cannot link a netdevsim to itself
[  520.859485] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).