[  491.292215] netdevsim netdevsim337 eni337np1: renamed from eth0
[  491.388685] netdevsim netdevsim608 eni608np1: renamed from eth1
[  491.613518] Could not find device with ifindex 2000 in netnsfd 11
[  491.613909] Could not find netns with fd: 2000
[  491.614003] Cannot link a netdevsim to itself
[  491.614110] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).