[  521.090569] netdevsim netdevsim583 eni583np1: renamed from eth1
[  521.188716] netdevsim netdevsim342 eni342np1: renamed from eth0
[  521.442690] Could not find device with ifindex 2000 in netnsfd 11
[  521.442909] Could not find netns with fd: 2000
[  521.443026] Cannot link a netdevsim to itself
[  521.443183] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).