[  488.282067] netdevsim netdevsim315 eni315np1: renamed from eth0
[  488.379308] netdevsim netdevsim685 eni685np1: renamed from eth1
[  488.613997] Could not find device with ifindex 2000 in netnsfd 11
[  488.614222] Could not find netns with fd: 2000
[  488.614334] Cannot link a netdevsim to itself
[  488.614473] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).