[  496.700212] netdevsim netdevsim456 eni456np1: renamed from eth0
[  496.794205] netdevsim netdevsim569 eni569np1: renamed from eth1
[  497.170423] Could not find device with ifindex 2000 in netnsfd 11
[  497.170988] Could not find netns with fd: 2000
[  497.171144] Cannot link a netdevsim to itself
[  497.171300] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).