[  634.926664][ T9935] netdevsim netdevsim392 eni392np1: renamed from eth0
[  634.943446][ T9933] netdevsim netdevsim766 eni766np1: renamed from eth1
[  635.810880][ T9921] Could not find device with ifindex 2000 in netnsfd 11
[  635.811622][ T9921] Could not find netns with fd: 2000
[  635.812162][ T9921] Cannot link a netdevsim to itself
[  635.812997][ T9921] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).