[  522.330858] netdevsim netdevsim641 eni641np1: renamed from eth1
[  522.427644] netdevsim netdevsim323 eni323np1: renamed from eth0
[  522.694303] Could not find device with ifindex 2000 in netnsfd 11
[  522.694546] Could not find netns with fd: 2000
[  522.694663] Cannot link a netdevsim to itself
[  522.694804] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).