[  487.189023] netdevsim netdevsim663 eni663np1: renamed from eth1
[  487.290345] netdevsim netdevsim344 eni344np1: renamed from eth0
[  487.668311] Could not find device with ifindex 2000 in netnsfd 11
[  487.668444] Could not find netns with fd: 2000
[  487.668518] Cannot link a netdevsim to itself
[  487.668608] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).