[  486.399472] netdevsim netdevsim508 eni508np1: renamed from eth0
[  486.495260] netdevsim netdevsim757 eni757np1: renamed from eth1
[  486.708953] Could not find device with ifindex 2000 in netnsfd 11
[  486.709312] Could not find netns with fd: 2000
[  486.709414] Cannot link a netdevsim to itself
[  486.709527] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).