[   39.311024][  T695] netdevsim netdevsim419 eni419np1: renamed from eth0
[   39.346887][  T761] netdevsim netdevsim713 eni713np1: renamed from eth1
[   41.216318][  T840] Could not find device with ifindex 2000 in netnsfd 11
[   41.217217][  T840] Could not find netns with fd: 2000
[   41.218104][  T840] Cannot link a netdevsim to itself
[   41.218864][  T840] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).