[  479.432214] netdevsim netdevsim276 eni276np1: renamed from eth0
[  479.432464] netdevsim netdevsim620 eni620np1: renamed from eth1
[  479.526319] Could not find device with ifindex 2000 in netnsfd 11
[  479.526425] Could not find netns with fd: 2000
[  479.526469] Cannot link a netdevsim to itself
[  479.526521] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).