Bug 911751

Summary:	Georgia Tech Rsync Mirror publishes AAAA record, but appears ipv4-only.
Product:	Mirrors	Reporter:	Joe Kappus <joe>
Component:	Server Problem	Assignee:	Mirror Admins <mirror-admin>
Status:	RESOLVED FIXED
Severity:	normal	CC:	gentoo, joe, lxmirror, paul
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=585524
Whiteboard:
Package list:		Runtime testing required:	---

Description Joe Kappus 2023-08-05 08:19:54 UTC

Rsync will just hang waiting for a connection that never happens if ipv6 connection is attempted. My ISP is ipv6 only with a 464xlat translation to get to ipv4 servers, using ipv4 addresses work file for this mirror.

Reproducible: Always

Steps to Reproduce:
1. Have ipv6 ISP
2. sync from rsync://rsync.gtlib.gatech.edu/gentoo
3. watch as hangs, adding -4 to rsync command prevents this. 
Actual Results:  
Just do:

rsync -6 rsync://rsync.gtlib.gatech.edu/gentoo /tmp/test --stats -av
and compare with
rsync -4 rsync://rsync.gtlib.gatech.edu/gentoo /tmp/test --stats -av

Expected Results:  
Ipv6 should work if this page is right: https://www.gentoo.org/downloads/mirrors/#US

But this page and my testing suggests it's ipv4only as this page suggests: https://www.gentoo.org/support/rsync-mirrors/

Comment 1 Larry the Git Cow gentoo-dev

2023-09-16 05:03:45 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/api.git/commit/?id=5cc56d3a4bc266119ccf8d7550424e9159c3a725

commit 5cc56d3a4bc266119ccf8d7550424e9159c3a725
Author:     Sam James <sam@gentoo.org>
AuthorDate: 2023-09-16 05:03:10 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2023-09-16 05:03:39 +0000

    mirrors: distfiles: drop IPv6 from gatech
    
    I can't contact their rsync daemon over IPv6, nor their httpd.
    
    I'm going to email in a moment.
    
    Bug: https://bugs.gentoo.org/911751
    Signed-off-by: Sam James <sam@gentoo.org>

 files/mirrors/distfiles.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comment 2 Sam James archtester

2023-09-16 05:05:41 UTC

Georgia Tech: could you take a look please?

I've dropped it as IPv6 for now in our listing but that won't help entirely because of the AAAA record being published.

Comment 3 Paul Marks 2024-02-18 18:03:15 UTC

The AAAA records are gone now:

$ host rsync.gtlib.gatech.edu
rsync.gtlib.gatech.edu has address 128.61.111.9
rsync.gtlib.gatech.edu has address 128.61.111.7

Comment 4 Joe Kappus 2024-02-18 18:45:14 UTC

Finally! While it would be better if they could support modern internet this resolves the reason for the report, it helps.