[  521.271530] netdevsim netdevsim647 eni647np1: renamed from eth1
[  521.368315] netdevsim netdevsim281 eni281np1: renamed from eth0
[  521.609190] Could not find device with ifindex 2000 in netnsfd 11
[  521.609432] Could not find netns with fd: 2000
[  521.609546] Cannot link a netdevsim to itself
[  521.609682] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).