geography/kplex 1.3.2 NetBSD

kplex is a multitransport software data multiplexer, working with data conforming to the NMEA-0183 standard.

Kplex multiplexes data inputs from sources such as serial lines, pseudo terminals and network interfaces and send to any (reasonable) number of similar outputs.

kplex can perform filtering of inputs (so you only get the data you want, or don't get the data you don't want from a given source) and outputs (so you only send what you want where you want) and can perform fine-grained failover so that for any given type of data, you specify a priority order of the source you would like to take it from.