[  881.874075][ T9690] netdevsim netdevsim615 eni615np1: renamed from eth1
[  881.973159][ T9693] netdevsim netdevsim346 eni346np1: renamed from eth0
[  883.791154][ T9683] Could not find device with ifindex 2000 in netnsfd 11
[  883.792151][ T9683] Could not find netns with fd: 2000
[  883.792838][ T9683] Cannot link a netdevsim to itself
[  883.793715][ T9683] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).