[ 1038.293705][T12655] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1038.395029][T12587] netdevsim netdevsim701 eni701np1: renamed from eth1
[ 1040.227911][T12732] Could not find device with ifindex 2000 in netnsfd 11
[ 1040.228883][T12732] Could not find netns with fd: 2000
[ 1040.230137][T12732] Cannot link a netdevsim to itself
[ 1040.231214][T12732] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).