[  493.584019] netdevsim netdevsim305 eni305np1: renamed from eth0
[  493.585672] netdevsim netdevsim673 eni673np1: renamed from eth0
[  493.703039] Could not find device with ifindex 2000 in netnsfd 11
[  493.703227] Could not find netns with fd: 2000
[  493.703332] Cannot link a netdevsim to itself
[  493.703455] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).