[   14.944257][  T240] netdevsim netdevsim661 eni661np1: renamed from eth1
[   15.026940][  T243] netdevsim netdevsim461 eni461np1: renamed from eth0
[   17.689141][  T230] Could not find device with ifindex 2000 in netnsfd 11
[   17.690258][  T230] Could not find netns with fd: 2000
[   17.691089][  T230] Cannot link a netdevsim to itself
[   17.692184][  T230] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).