Network I/O with packet timestamping for the
rTime NTP/PTP time synchronization daemon.
Wraps UDP sockets with software and (where available) hardware receive/transmit
timestamping — essential for accurate offset measurement — plus multicast join/leave and
network-interface discovery.
§Modules
udp — timestamped UDP socket wrappers.multicast — multicast group membership (used by PTP).interface — network interface enumeration and capability queries.