[  520.294367] netdevsim netdevsim502 eni502np1: renamed from eth0
[  520.391420] netdevsim netdevsim660 eni660np1: renamed from eth1
[  520.649914] Could not find device with ifindex 2000 in netnsfd 11
[  520.650162] Could not find netns with fd: 2000
[  520.650283] Cannot link a netdevsim to itself
[  520.650409] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).