[  486.387744] netdevsim netdevsim623 eni623np1: renamed from eth1
[  486.389818] netdevsim netdevsim269 eni269np1: renamed from eth0
[  486.465234] Could not find device with ifindex 2000 in netnsfd 11
[  486.465358] Could not find netns with fd: 2000
[  486.465469] Cannot link a netdevsim to itself
[  486.465589] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).