[  515.552116] netdevsim netdevsim257 eni257np1: renamed from eth0
[  515.649830] netdevsim netdevsim703 eni703np1: renamed from eth1
[  515.893274] Could not find device with ifindex 2000 in netnsfd 11
[  515.893498] Could not find netns with fd: 2000
[  515.893607] Cannot link a netdevsim to itself
[  515.893745] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).