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Message #00063
[Bug 241305] Re: security.ubuntu.com not accessible in IPv6 (AAAA record missing in the DNS)
This only sort of works. While archive.ubuntu and security.ubuntu do
indeed have AAAA records, if you actually disable IPv4, updates still
fail. In 13.04, running software updater with IPv6-only connectivity
produces the error "unable to get repository information" and recommends
that you check your internet connection. This is during the initial
check for updates. Wireshark shows it trying to reach
us.archive.ubuntu.com and daisy.ubuntu.com, neither of which have AAAA
records.
--
You received this bug notification because you are a member of IPv6 Task
Force, which is subscribed to a duplicate bug report (493754).
https://bugs.launchpad.net/bugs/241305
Title:
security.ubuntu.com not accessible in IPv6 (AAAA record missing in the
DNS)
Status in Ubuntu Website Product:
Fix Released
Status in “update-manager” package in Ubuntu:
Invalid
Bug description:
Dear,
The apt source list for security update is by default configured to
security.ubuntu.com.
When you have a system using only IPv6 (and having not access to IPv4 via NAT-PT),
security.ubuntu.com is only reachable in IPv4.
It would be wise to configure an AAAA record to security.ubuntu.com to at least
point to one of the many mirrors supporting IPv6 connectivity.
That would avoid system running natively in IPv6 to lack by default the security
update.
Thanks a lot,
Kind regards
PS : I checked this as being a security vulnerability but this is more a configuration issue
on the Ubuntu network infrastructure than a real security vulnerability:
A DNS AAAA request :
dig -t AAAA security.ubuntu.com
; <<>> DiG 9.4.1-P1 <<>> -t AAAA security.ubuntu.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26872
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;security.ubuntu.com. IN AAAA
;; AUTHORITY SECTION:
ubuntu.com. 3600 IN SOA ns1.canonical.com. hostmaster.canonical.com. 2008061805 10800 3600 604800 3600
;; Query time: 134 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Jun 19 15:17:39 2008
;; MSG SIZE rcvd: 98
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