[  473.886588] netdevsim netdevsim427 eni427np1: renamed from eth0
[  473.888898] netdevsim netdevsim720 eni720np1: renamed from eth1
[  473.960554] Could not find device with ifindex 2000 in netnsfd 11
[  473.960636] Could not find netns with fd: 2000
[  473.960680] Cannot link a netdevsim to itself
[  473.960730] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).