[  488.459753] netdevsim netdevsim339 eni339np1: renamed from eth0
[  488.556582] netdevsim netdevsim668 eni668np1: renamed from eth1
[  488.765300] Could not find device with ifindex 2000 in netnsfd 11
[  488.765550] Could not find netns with fd: 2000
[  488.765650] Cannot link a netdevsim to itself
[  488.765768] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).