[  518.254773] netdevsim netdevsim687 eni687np1: renamed from eth1
[  518.352776] netdevsim netdevsim486 eni486np1: renamed from eth0
[  518.567186] Could not find device with ifindex 2000 in netnsfd 11
[  518.567416] Could not find netns with fd: 2000
[  518.567526] Cannot link a netdevsim to itself
[  518.567641] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).