[  478.664590] netdevsim netdevsim644 eni644np1: renamed from eth1
[  478.764629] netdevsim netdevsim457 eni457np1: renamed from eth0
[  479.088113] Could not find device with ifindex 2000 in netnsfd 11
[  479.088246] Could not find netns with fd: 2000
[  479.088310] Cannot link a netdevsim to itself
[  479.088389] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).