[  521.574456] netdevsim netdevsim739 eni739np1: renamed from eth1
[  521.672396] netdevsim netdevsim471 eni471np1: renamed from eth0
[  521.890353] Could not find device with ifindex 2000 in netnsfd 11
[  521.890525] Could not find netns with fd: 2000
[  521.890618] Cannot link a netdevsim to itself
[  521.890742] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).