[  511.644508] netdevsim netdevsim719 eni719np1: renamed from eth1
[  511.742004] netdevsim netdevsim304 eni304np1: renamed from eth0
[  511.980105] Could not find device with ifindex 2000 in netnsfd 11
[  511.980295] Could not find netns with fd: 2000
[  511.980386] Cannot link a netdevsim to itself
[  511.980485] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).