[  511.174849] netdevsim netdevsim448 eni448np1: renamed from eth0
[  511.272695] netdevsim netdevsim631 eni631np1: renamed from eth1
[  511.468902] Could not find device with ifindex 2000 in netnsfd 11
[  511.469114] Could not find netns with fd: 2000
[  511.469219] Cannot link a netdevsim to itself
[  511.469333] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).