[  483.018145] netdevsim netdevsim331 eni331np1: renamed from eth0
[  483.018685] netdevsim netdevsim741 eni741np1: renamed from eth1
[  483.120484] Could not find device with ifindex 2000 in netnsfd 11
[  483.120618] Could not find netns with fd: 2000
[  483.120723] Cannot link a netdevsim to itself
[  483.120804] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).