[  484.528613] netdevsim netdevsim523 eni523np1: renamed from eth1
[  484.626079] netdevsim netdevsim305 eni305np1: renamed from eth0
[  484.861021] Could not find device with ifindex 2000 in netnsfd 11
[  484.861193] Could not find netns with fd: 2000
[  484.861274] Cannot link a netdevsim to itself
[  484.861368] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).