@NfNitLoop on Twitter: Post

@NfNitLoop ("Cody C. #BLM") replied to a tweet by @noIPv6:

@noIPv6 ULA wasn't the issue.

I was using the
SocketAddrV6.scope_id()
as the interface index when doing
socket.join_multicast_v6(&multicast, interface_index);

However, ULAs don't need (so don't have) a scope_id. When you join w/ idx==0 ... not sure what Windows did, but it was wrong.