[  520.721649] netdevsim netdevsim746 eni746np1: renamed from eth1
[  520.818106] netdevsim netdevsim506 eni506np1: renamed from eth0
[  521.035983] Could not find device with ifindex 2000 in netnsfd 11
[  521.036159] Could not find netns with fd: 2000
[  521.036238] Cannot link a netdevsim to itself
[  521.036326] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).