Reported from a station whose two WSJT-X rows had been dead for weeks:
both were ticked multicast with 127.0.0.1 in the group box, and both
failed the join on every interface with
setsockopt: l'adresse demandée n'est pas valide dans son contexte
which names nothing the operator typed and does not say what is wrong
with it. A multicast group runs 224.0.0.0 to 239.255.255.255; 127.0.0.1
is loopback unicast, and it is an understandable thing to type — it is
the address every other field in every other program wants.
The address is now checked before the join. When it is not a multicast
one the row listens on unicast instead, which is what such an address
means, and the log says why it is not multicast. The row works, and the
reason is in a sentence rather than in a kernel error code.
rouggy
612e265837