[  487.559760] netdevsim netdevsim437 eni437np1: renamed from eth0
[  487.656793] netdevsim netdevsim564 eni564np1: renamed from eth1
[  487.877734] Could not find device with ifindex 2000 in netnsfd 11
[  487.878068] Could not find netns with fd: 2000
[  487.878209] Cannot link a netdevsim to itself
[  487.878373] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).