[  810.785539][T14780] netdevsim netdevsim423 eni423np1: renamed from eth0
[  810.798074][T14782] netdevsim netdevsim721 eni721np1: renamed from eth1
[  811.463703][T14768] Could not find device with ifindex 2000 in netnsfd 11
[  811.464545][T14768] Could not find netns with fd: 2000
[  811.464949][T14768] Cannot link a netdevsim to itself
[  811.465399][T14768] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).