[  491.914744] netdevsim netdevsim401 eni401np1: renamed from eth0
[  492.011654] netdevsim netdevsim726 eni726np1: renamed from eth1
[  492.224139] Could not find device with ifindex 2000 in netnsfd 11
[  492.224455] Could not find netns with fd: 2000
[  492.224575] Cannot link a netdevsim to itself
[  492.224724] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).