[  520.937329] netdevsim netdevsim489 eni489np1: renamed from eth0
[  521.034123] netdevsim netdevsim607 eni607np1: renamed from eth1
[  521.240075] Could not find device with ifindex 2000 in netnsfd 11
[  521.240244] Could not find netns with fd: 2000
[  521.240315] Cannot link a netdevsim to itself
[  521.240401] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).