[  489.112604] netdevsim netdevsim321 eni321np1: renamed from eth0
[  489.213635] netdevsim netdevsim754 eni754np1: renamed from eth1
[  489.576066] Could not find device with ifindex 2000 in netnsfd 11
[  489.576210] Could not find netns with fd: 2000
[  489.576291] Cannot link a netdevsim to itself
[  489.576413] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).