[  513.644914] netdevsim netdevsim651 eni651np1: renamed from eth1
[  513.742629] netdevsim netdevsim454 eni454np1: renamed from eth0
[  513.979277] Could not find device with ifindex 2000 in netnsfd 11
[  513.979507] Could not find netns with fd: 2000
[  513.979598] Cannot link a netdevsim to itself
[  513.979698] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).