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From: "sourceware at isomer dot meta.net.nz"
 <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/29609] New: getaddrinfo is missing IPPROTO_MPTCP
Date: Sat, 24 Sep 2022 10:36:27 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29609

            Bug ID: 29609
           Summary: getaddrinfo is missing IPPROTO_MPTCP
           Product: glibc
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: nss
          Assignee: unassigned at sourceware dot org
          Reporter: sourceware at isomer dot meta.net.nz
  Target Milestone: ---

Attempting to use IPPROTO_MPTCP with getaddrinfo(3) returns -EAI_SOCKTYPE.

I think this is due to the gaih_inet_typeproto table[0] missing an entry fo=
r:

#ifdef IPPROTO_MPTCP
 { SOCK_STREAM, IPPROTO_MPTCP, 0, false, "tcp" },
#endif


Support for IPPROTO_MPTCP was added in Linux 5.6[1].  It would be nice if
glibc's getaddrinfo also supported it without hacks.


[0]:
https://sourceware.org/git/?p=3Dglibc.git;a=3Dblob;f=3Dsysdeps/posix/getadd=
rinfo.c;h=3Dbcff909b2f3939d04b6ad33a78ae4f510504f96c;hb=3DHEAD#l131
[1]: https://kernelnewbies.org/Linux_5.6#Initial_support_for_MultiPath_TCP

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