[  472.751898] netdevsim netdevsim611 eni611np1: renamed from eth1
[  472.752309] netdevsim netdevsim420 eni420np1: renamed from eth0
[  472.831212] Could not find device with ifindex 2000 in netnsfd 11
[  472.831307] Could not find netns with fd: 2000
[  472.831353] Cannot link a netdevsim to itself
[  472.831403] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).