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From: "gavin at matician dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/14413] nsswitch doesn't implement getaddrinfo(),
 plugins cannot provide full getaddrinfo features
Date: Tue, 07 Apr 2020 19:53:29 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D14413

Gavin <gavin at matician dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gavin at matician dot com

--- Comment #8 from Gavin <gavin at matician dot com> ---
Confirming that this issue still exists as of 2.31.

ssh -v host.local works:

OpenSSH_8.2p1, OpenSSL 1.1.1f  31 Mar 2020
debug1: Reading configuration data /home/gavin/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to host.local [fe80::88aa:55ff:fec5:dd9%wlan0] port 22.
debug1: Connection established.

ssh -v -6 host.local does not work:

OpenSSH_8.2p1, OpenSSL 1.1.1f  31 Mar 2020
debug1: Reading configuration data /home/gavin/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to host.local [fe80::88aa:55ff:fec5:dd9] port 22.
debug1: connect to address fe80::88aa:55ff:fec5:dd9 port 22: Invalid argume=
nt

The first case calls get getaddrinfo() with hints->ai_family=3DAF_UNSPEC, t=
he
second case calls it with hints->ai_family=3DAF_INET6.

As a workaround until gethostbyname5 comes along, would it make sense to mo=
dify
gethostbyname3 such that it stuffs a whole sockaddr_in6 into h_addr, sets
h_length to sizeof(sockaddr_in6), and glibc can take care of it accordingly
depending on the value of h_length?

--=20
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