[  473.534840] netdevsim netdevsim319 eni319np1: renamed from eth0
[  473.535406] netdevsim netdevsim613 eni613np1: renamed from eth1
[  473.624299] Could not find device with ifindex 2000 in netnsfd 11
[  473.624454] Could not find netns with fd: 2000
[  473.624548] Cannot link a netdevsim to itself
[  473.624642] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).