[  488.494813] netdevsim netdevsim451 eni451np1: renamed from eth0
[  488.595211] netdevsim netdevsim546 eni546np1: renamed from eth1
[  488.963473] Could not find device with ifindex 2000 in netnsfd 11
[  488.963650] Could not find netns with fd: 2000
[  488.963724] Cannot link a netdevsim to itself
[  488.963814] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).