[bug #56695] Multicast socket options missing for IPv6

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[bug #56695] Multicast socket options missing for IPv6

David GIRAULT-2
URL:
  <https://savannah.nongnu.org/bugs/?56695>

                 Summary: Multicast socket options missing for IPv6
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: dapaulid
            Submitted on: Tue 30 Jul 2019 11:37:45 AM UTC
                Category: IPv6
                Severity: 3 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

    _______________________________________________________

Details:

The following socket options related to multicast for IPv6 seem to be
missing:

IPV6_MULTICAST_LOOP
IPV6_MULTICAST_HOPS
IPV6_MULTICAST_IF

(see http://man7.org/linux/man-pages/man7/ipv6.7.html)

These options are used by the open62541 library for implementing OPC UA PubSub
(see https://open62541.org/).




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[bug #56695] Multicast socket options missing for IPv6

David GIRAULT-2
Follow-up Comment #1, bug #56695 (project lwip):

Isn't this a duplicate? I think we already have a bug, task or patch for this.

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[bug #56695] Multicast socket options missing for IPv6

David GIRAULT-2
Follow-up Comment #2, bug #56695 (project lwip):

You're right, after some more searching I found this patch:
https://savannah.nongnu.org/patch/?func=detailitem&item_id=9257

From my understanding, core support is implemented, but the options are not
yet available in the socket API.


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[bug #56695] Multicast socket options missing for IPv6

David GIRAULT-2
Follow-up Comment #3, bug #56695 (project lwip):

Right. Someone needs to clean up those patches into smaller ones that are more
easily reviewable... I'd do it if I found the time, but I failed to do that in
the last months... :-(

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