On 2023-01-06 06:17, Sjoerd Mullender wrote:
I have a program that is supposed to listen to the same port on both
IPv4 and IPv6 sockets. In the past, what it did, was basically:
create new socket for IPv6, set option IPV6_V6ONLY to off, bind,
listen; then create a new socket for IPv4, and also bind and listen.
Do you have sample code that demonstrates this process?
I'm confused by your description, because setting IPV6_V6ONLY to 0 with
setsockopt should result in a socket that's bound to a port that accepts
both IPv4 and IPv6 connections. You shouldn't have ever been able to
bind to that port in IPv4 in the past.
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