[  487.938725] netdevsim netdevsim649 eni649np1: renamed from eth1
[  488.035808] netdevsim netdevsim420 eni420np1: renamed from eth0
[  488.271225] Could not find device with ifindex 2000 in netnsfd 11
[  488.271615] Could not find netns with fd: 2000
[  488.271720] Cannot link a netdevsim to itself
[  488.271858] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).