[  478.308835] netdevsim netdevsim290 eni290np1: renamed from eth0
[  478.309237] netdevsim netdevsim721 eni721np1: renamed from eth1
[  478.400047] Could not find device with ifindex 2000 in netnsfd 11
[  478.400205] Could not find netns with fd: 2000
[  478.400312] Cannot link a netdevsim to itself
[  478.400435] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).