[ 1038.332753][T12579] netdevsim netdevsim644 eni644np1: renamed from eth1
[ 1038.455237][T12580] netdevsim netdevsim321 eni321np1: renamed from eth0
[ 1040.357012][T12572] Could not find device with ifindex 2000 in netnsfd 11
[ 1040.357915][T12572] Could not find netns with fd: 2000
[ 1040.358941][T12572] Cannot link a netdevsim to itself
[ 1040.359721][T12572] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).