UDPSServer parses Interface with inet_addr() to set IP_MULTICAST_IF, so
a name like "eth0" yields INADDR_NONE and Initialise fails. Every
example in UDPStreamer.md used "eth0", so anyone following the docs hit
that failure; the .cfg files in Test/ already used a dotted-quad.
Replace the examples with 192.168.1.10, state the dotted-quad
requirement in the parameter table and the Multicast section, and note
that receivers must join on the matching interface or they silently
receive nothing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
