[  478.595608] netdevsim netdevsim336 eni336np1: renamed from eth0
[  478.595810] netdevsim netdevsim669 eni669np1: renamed from eth1
[  478.694970] Could not find device with ifindex 2000 in netnsfd 11
[  478.695134] Could not find netns with fd: 2000
[  478.695255] Cannot link a netdevsim to itself
[  478.695411] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).