[  454.863072] netdevsim netdevsim499 eni499np1: renamed from eth0
[  454.863564] netdevsim netdevsim635 eni635np1: renamed from eth1
[  454.950547] Could not find device with ifindex 2000 in netnsfd 11
[  454.950684] Could not find netns with fd: 2000
[  454.950739] Cannot link a netdevsim to itself
[  454.950797] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).