[  478.195813] netdevsim netdevsim304 eni304np1: renamed from eth0
[  478.197365] netdevsim netdevsim545 eni545np1: renamed from eth0
[  478.303100] Could not find device with ifindex 2000 in netnsfd 11
[  478.303260] Could not find netns with fd: 2000
[  478.303386] Cannot link a netdevsim to itself
[  478.303527] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).