[  486.292174] netdevsim netdevsim509 eni509np1: renamed from eth0
[  486.393295] netdevsim netdevsim649 eni649np1: renamed from eth1
[  486.753192] Could not find device with ifindex 2000 in netnsfd 11
[  486.753351] Could not find netns with fd: 2000
[  486.753443] Cannot link a netdevsim to itself
[  486.753536] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).