[  521.976767] netdevsim netdevsim509 eni509np1: renamed from eth0
[  522.075141] netdevsim netdevsim553 eni553np1: renamed from eth1
[  522.247585] Could not find device with ifindex 2000 in netnsfd 11
[  522.247732] Could not find netns with fd: 2000
[  522.247806] Cannot link a netdevsim to itself
[  522.247898] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).