[  485.876306] netdevsim netdevsim309 eni309np1: renamed from eth0
[  485.976970] netdevsim netdevsim650 eni650np1: renamed from eth1
[  486.341913] Could not find device with ifindex 2000 in netnsfd 11
[  486.342058] Could not find netns with fd: 2000
[  486.342140] Cannot link a netdevsim to itself
[  486.342244] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).