[lwip-devel] [bug #41700] Call to tcp_listen_dual() should not accept IPv4 listen PCB args

[Simon Goldschmidt]

Update of bug #41700 (project lwip):

                  Status:                    None => Works For Me           

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Follow-up Comment #1:

How would you know a connection is IPv4-only? We only have a single boolean
'isipv6'. If we interpreted this as 'one-or-the-other' in tcp_listen_dual, how
would you ever listen to both IP versions?

I'd rather suggest to not call tcp_listen_dual here. Or we would need to check
that we are allowed to listen on this port/IP version and not enable
accept_any_ip_version if an IPv4-only or IPv6-only pcb is already blocking the
port.

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  <http://savannah.nongnu.org/bugs/?41700>

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