[  491.008716] netdevsim netdevsim496 eni496np1: renamed from eth0
[  491.009418] netdevsim netdevsim660 eni660np1: renamed from eth1
[  491.100935] Could not find device with ifindex 2000 in netnsfd 11
[  491.101034] Could not find netns with fd: 2000
[  491.101078] Cannot link a netdevsim to itself
[  491.101135] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).