[  519.877458] netdevsim netdevsim754 eni754np1: renamed from eth1
[  519.974123] netdevsim netdevsim428 eni428np1: renamed from eth0
[  520.217538] Could not find device with ifindex 2000 in netnsfd 11
[  520.217724] Could not find netns with fd: 2000
[  520.217813] Cannot link a netdevsim to itself
[  520.217915] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).