[  473.444243] netdevsim netdevsim486 eni486np1: renamed from eth0
[  473.445322] netdevsim netdevsim639 eni639np1: renamed from eth0
[  473.521843] Could not find device with ifindex 2000 in netnsfd 11
[  473.521982] Could not find netns with fd: 2000
[  473.522087] Cannot link a netdevsim to itself
[  473.522203] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).