[  485.889477] netdevsim netdevsim339 eni339np1: renamed from eth0
[  485.991240] netdevsim netdevsim699 eni699np1: renamed from eth1
[  486.358414] Could not find device with ifindex 2000 in netnsfd 11
[  486.358537] Could not find netns with fd: 2000
[  486.358599] Cannot link a netdevsim to itself
[  486.358703] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).