hopLimit

@get:JvmName(name = "getHopLimit")
@set:JvmName(name = "setHopLimit")
var hopLimit: Int
If unset treated as zero (no forwarding, send to direct neighbor nodes only)
if 1, allow hopping through one node, etc...
For our usecase real world topologies probably have a max of about 3.
This field is normally placed into a few of bits in the header.

uint32 hop_limit = 9;