Tool: Obey --set-tunnel-ttl=0 and --set-tunnel-tos=0
Tool: Obey --set-tunnel-ttl=0 and --set-tunnel-tos=0

But it turns out that the kernel ignores the presence of a tunnel tos
of 0 anyway.

weaveworks/go-odp,awh/go-odp,bboreham/go-odp