[  493.170322] netdevsim netdevsim307 eni307np1: renamed from eth0
[  493.264922] netdevsim netdevsim741 eni741np1: renamed from eth1
[  493.503765] Could not find device with ifindex 2000 in netnsfd 11
[  493.504117] Could not find netns with fd: 2000
[  493.504221] Cannot link a netdevsim to itself
[  493.504319] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).