[  486.873897] netdevsim netdevsim630 eni630np1: renamed from eth1
[  486.974794] netdevsim netdevsim379 eni379np1: renamed from eth0
[  487.365594] Could not find device with ifindex 2000 in netnsfd 11
[  487.365733] Could not find netns with fd: 2000
[  487.365819] Cannot link a netdevsim to itself
[  487.365918] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).