[  485.937866] netdevsim netdevsim468 eni468np1: renamed from eth0
[  486.038496] netdevsim netdevsim604 eni604np1: renamed from eth1
[  486.408347] Could not find device with ifindex 2000 in netnsfd 11
[  486.408500] Could not find netns with fd: 2000
[  486.408590] Cannot link a netdevsim to itself
[  486.408702] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).