[  488.951188] netdevsim netdevsim656 eni656np1: renamed from eth1
[  489.052419] netdevsim netdevsim377 eni377np1: renamed from eth0
[  489.375724] Could not find device with ifindex 2000 in netnsfd 11
[  489.375868] Could not find netns with fd: 2000
[  489.375953] Cannot link a netdevsim to itself
[  489.376079] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).