[  485.945537] netdevsim netdevsim464 eni464np1: renamed from eth0
[  486.042654] netdevsim netdevsim642 eni642np1: renamed from eth1
[  486.273411] Could not find device with ifindex 2000 in netnsfd 11
[  486.273598] Could not find netns with fd: 2000
[  486.273671] Cannot link a netdevsim to itself
[  486.273759] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).