[  487.449240] netdevsim netdevsim688 eni688np1: renamed from eth1
[  487.544604] netdevsim netdevsim399 eni399np1: renamed from eth0
[  487.766767] Could not find device with ifindex 2000 in netnsfd 11
[  487.767033] Could not find netns with fd: 2000
[  487.767109] Cannot link a netdevsim to itself
[  487.767200] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).