[  515.020502] netdevsim netdevsim313 eni313np1: renamed from eth0
[  515.118404] netdevsim netdevsim636 eni636np1: renamed from eth1
[  515.332276] Could not find device with ifindex 2000 in netnsfd 11
[  515.332448] Could not find netns with fd: 2000
[  515.332529] Cannot link a netdevsim to itself
[  515.332622] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).