[  479.511836] netdevsim netdevsim455 eni455np1: renamed from eth0
[  479.512626] netdevsim netdevsim720 eni720np1: renamed from eth1
[  479.594744] Could not find device with ifindex 2000 in netnsfd 11
[  479.594867] Could not find netns with fd: 2000
[  479.594926] Cannot link a netdevsim to itself
[  479.594990] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).