[  485.917016] netdevsim netdevsim511 eni511np1: renamed from eth0
[  486.018993] netdevsim netdevsim688 eni688np1: renamed from eth1
[  486.420717] Could not find device with ifindex 2000 in netnsfd 11
[  486.420904] Could not find netns with fd: 2000
[  486.421002] Cannot link a netdevsim to itself
[  486.421124] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).