[  520.412114] netdevsim netdevsim751 eni751np1: renamed from eth1
[  520.509649] netdevsim netdevsim476 eni476np1: renamed from eth0
[  520.719372] Could not find device with ifindex 2000 in netnsfd 11
[  520.719563] Could not find netns with fd: 2000
[  520.719665] Cannot link a netdevsim to itself
[  520.719796] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).