[  477.989053] netdevsim netdevsim623 eni623np1: renamed from eth1
[  477.989234] netdevsim netdevsim478 eni478np1: renamed from eth0
[  478.091342] Could not find device with ifindex 2000 in netnsfd 11
[  478.091475] Could not find netns with fd: 2000
[  478.091577] Cannot link a netdevsim to itself
[  478.091689] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).