[   44.138038][  T581] netdevsim netdevsim312 eni312np1: renamed from eth0
[   44.176430][  T579] netdevsim netdevsim612 eni612np1: renamed from eth1
[   47.574979][  T573] Could not find device with ifindex 2000 in netnsfd 11
[   47.575671][  T573] Could not find netns with fd: 2000
[   47.576406][  T573] Cannot link a netdevsim to itself
[   47.577250][  T573] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).