[   33.906240][  T239] netdevsim netdevsim306 eni306np1: renamed from eth0
[   33.991796][  T243] netdevsim netdevsim632 eni632np1: renamed from eth1
[   35.525427][  T837] Could not find device with ifindex 2000 in netnsfd 11
[   35.526355][  T837] Could not find netns with fd: 2000
[   35.526998][  T837] Cannot link a netdevsim to itself
[   35.527755][  T837] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).