[  457.142974] netdevsim netdevsim639 eni639np1: renamed from eth1
[  457.143814] netdevsim netdevsim370 eni370np1: renamed from eth0
[  457.245938] Could not find device with ifindex 2000 in netnsfd 11
[  457.246054] Could not find netns with fd: 2000
[  457.246107] Cannot link a netdevsim to itself
[  457.246173] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).