[  512.319483] netdevsim netdevsim401 eni401np1: renamed from eth0
[  512.416959] netdevsim netdevsim555 eni555np1: renamed from eth1
[  512.636381] Could not find device with ifindex 2000 in netnsfd 11
[  512.636613] Could not find netns with fd: 2000
[  512.636747] Cannot link a netdevsim to itself
[  512.636900] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).