[  523.237419] netdevsim netdevsim404 eni404np1: renamed from eth0
[  523.334627] netdevsim netdevsim564 eni564np1: renamed from eth1
[  523.584556] Could not find device with ifindex 2000 in netnsfd 11
[  523.584748] Could not find netns with fd: 2000
[  523.584842] Cannot link a netdevsim to itself
[  523.584940] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).