[  493.028196] netdevsim netdevsim742 eni742np1: renamed from eth1
[  493.124706] netdevsim netdevsim300 eni300np1: renamed from eth0
[  493.346900] Could not find device with ifindex 2000 in netnsfd 11
[  493.347209] Could not find netns with fd: 2000
[  493.347299] Cannot link a netdevsim to itself
[  493.347406] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).