[  520.665854] netdevsim netdevsim572 eni572np1: renamed from eth1
[  520.762622] netdevsim netdevsim260 eni260np1: renamed from eth0
[  520.995359] Could not find device with ifindex 2000 in netnsfd 11
[  520.995531] Could not find netns with fd: 2000
[  520.995628] Cannot link a netdevsim to itself
[  520.995731] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).