[  522.291012] netdevsim netdevsim348 eni348np1: renamed from eth0
[  522.388860] netdevsim netdevsim600 eni600np1: renamed from eth1
[  522.624455] Could not find device with ifindex 2000 in netnsfd 11
[  522.624618] Could not find netns with fd: 2000
[  522.624691] Cannot link a netdevsim to itself
[  522.624778] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).