[  482.965409] netdevsim netdevsim309 eni309np1: renamed from eth0
[  483.067197] netdevsim netdevsim649 eni649np1: renamed from eth1
[  483.416644] Could not find device with ifindex 2000 in netnsfd 11
[  483.416789] Could not find netns with fd: 2000
[  483.416859] Cannot link a netdevsim to itself
[  483.416941] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).