On Oct 23, 2013, at 15:42, Timothy Hart wrote:

> Is the list of mirrors fairly stable? I'm referring to the contents of the 
> file at 
> 
> rsync.macports.org/release/tarballs/ports/_resources/port1.0/fetch/mirror_sites.tcl
> and
> rsync.macports.org/release/tarballs/ports/_resources/port1.0/fetch/archive_sites.tcl
> 
> I understand each port maintainer may change or modify their list of mirrors 
> at any time. I'm interested in knowing how frequently that happens 
> historically - and in aggregate.

mirror_sites change often. But most ports list individual master_sites and do 
not use the mirror_sites list. So attempting to whitelist all the domains ports 
may fetch from is virtually impossible.

The archive_sites list is very stable.


> Why?
> I have an issue in my organization where our DNS servers are configured to 
> 'helpfully' give an IP address back for every query. In cases where the host 
> is actually not known, the IP address is configured to perform a search and 
> respond with an HTML page. As a result macports installs can fail when the 
> first mirror site is not found.

Yes. We have a wiki page detailing this problem:

https://trac.macports.org/wiki/MisbehavingServers


> The network group is willing to consider white-listing macports mirror sites 
> for us as a solution. I want to make sure that maintaining a whitelist of 
> (currently over 300) mirrors won't turn into a maintenance headache.

DNS that returns a result when no result should be return is broken and needs 
to be fixed by your system administrators. No other valid interpretation of the 
relevant specifications exists.


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