[  756.331033][T14756] netdevsim netdevsim501 eni501np1: renamed from eth0
[  756.353249][T14759] netdevsim netdevsim631 eni631np1: renamed from eth1
[  756.888427][T14744] Could not find device with ifindex 2000 in netnsfd 11
[  756.888986][T14744] Could not find netns with fd: 2000
[  756.889368][T14744] Cannot link a netdevsim to itself
[  756.889809][T14744] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).