[  513.110992] netdevsim netdevsim752 eni752np1: renamed from eth1
[  513.208701] netdevsim netdevsim491 eni491np1: renamed from eth0
[  513.404799] Could not find device with ifindex 2000 in netnsfd 11
[  513.404968] Could not find netns with fd: 2000
[  513.405058] Cannot link a netdevsim to itself
[  513.405161] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).