[  487.441901] netdevsim netdevsim639 eni639np1: renamed from eth1
[  487.539351] netdevsim netdevsim385 eni385np1: renamed from eth0
[  487.742401] Could not find device with ifindex 2000 in netnsfd 11
[  487.742626] Could not find netns with fd: 2000
[  487.742712] Cannot link a netdevsim to itself
[  487.742825] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).