[  493.043711] netdevsim netdevsim513 eni513np1: renamed from eth1
[  493.141318] netdevsim netdevsim262 eni262np1: renamed from eth0
[  493.399331] Could not find device with ifindex 2000 in netnsfd 11
[  493.399754] Could not find netns with fd: 2000
[  493.399850] Cannot link a netdevsim to itself
[  493.399962] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).