[  776.263016][T14737] netdevsim netdevsim502 eni502np1: renamed from eth0
[  776.285478][T14740] netdevsim netdevsim639 eni639np1: renamed from eth1
[  776.929345][T14725] Could not find device with ifindex 2000 in netnsfd 11
[  776.929920][T14725] Could not find netns with fd: 2000
[  776.930531][T14725] Cannot link a netdevsim to itself
[  776.931226][T14725] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).