[  515.167513] netdevsim netdevsim449 eni449np1: renamed from eth0
[  515.265446] netdevsim netdevsim653 eni653np1: renamed from eth1
[  515.501017] Could not find device with ifindex 2000 in netnsfd 11
[  515.501264] Could not find netns with fd: 2000
[  515.501370] Cannot link a netdevsim to itself
[  515.501497] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).