1.3.10 interface buttons and "::1" problem

[John A. Murdie]

In message 18625 at 07:26 on May 13 I wrote to cups.general, I wrote:
>There are a couple of "::1"-related bug reports against 1.3.10:
>
>3169 HIGH Unresolved ALL "::1" not acceptable for Host: value from localhost
>3162 MOD Unresolved ALL IPv6 loopback address (::1) considered a bad host.
>
>One problem we see - which I am not entirely sure is completely the result of one of the problems
>reported above - is that the printer-related buttons of the web interface ('Stop printer', 'Reject jobs' >etc.) are now associated with '::1'-containing URLs, e.g. 'https://::1/admin/?op=stop-
>printer&printer_name=lab-printer'. When I press one (I'm a CUPS administrator), I see the error
>message dialogue:
>
>Port Restricted for Security Reasons
>Access to the port number given has been disabled for security reasons.
>The requested address specified a port (e.g. "mozilla.org:80" for port 80 on mozilla.org) normally
>used for purposes other than Web browsing. The browser has cancelled the request for your
>protection and security.
>[Try Again]
>
>This comes hard on the heels of a bug in 1.3.9 which caused the buttons similarly to be inoperable,
>although the cause and message was different:
>
>STR #3022: Invalid server URI in printer/classes pages in the web interface (closed)
>
>Is there an easy solution to the '::1'-containing URL problem, apart from hand-correcting it each time?

(I first saw the problem in 1.3.10.) I've found that the solution - in 1.3.11 at least - is to write:

Listen 0.0.0.0:631

in the /etc/cupsd.conf file, rather than just:

Listen 631

John A. Murdie