[  474.331738] netdevsim netdevsim506 eni506np1: renamed from eth0
[  474.332999] netdevsim netdevsim697 eni697np1: renamed from eth0
[  474.426476] Could not find device with ifindex 2000 in netnsfd 11
[  474.426622] Could not find netns with fd: 2000
[  474.426727] Cannot link a netdevsim to itself
[  474.426849] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).