[  460.896740] netdevsim netdevsim501 eni501np1: renamed from eth0
[  460.897324] netdevsim netdevsim642 eni642np1: renamed from eth1
[  460.990739] Could not find device with ifindex 2000 in netnsfd 11
[  460.990905] Could not find netns with fd: 2000
[  460.991014] Cannot link a netdevsim to itself
[  460.991140] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).