[  486.933367] netdevsim netdevsim256 eni256np1: renamed from eth0
[  486.933779] netdevsim netdevsim701 eni701np1: renamed from eth1
[  487.024820] Could not find device with ifindex 2000 in netnsfd 11
[  487.024926] Could not find netns with fd: 2000
[  487.024970] Cannot link a netdevsim to itself
[  487.025022] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).