IPv6 and DNS for the residential service provider

[Jeroen Massar]

On 2012-09-25 15:18 , Philipp Kern wrote:
> On Tue, Sep 25, 2012 at 03:05:55PM +0200, Jeroen Massar wrote:
>> On 2012-09-25 13:44, Philipp Kern wrote:
>>> On Tue, Sep 25, 2012 at 01:36:28PM +0200, Jeroen Massar wrote:
>>>> On 2012-09-25 11:44, Ole Trøan wrote:
>>>>> there is a recurring question being asked though... and that is "do
>>>>> we really need reverse DNS for IPv6?"
>>>> Yes, because IPv6 addresses look really ugly in 'who' output...
>>> Then we should fix the tools.
>> The tools use this standardized lookup under ip6.arpa...
> 
> What does that have to do with your remark? The IPv6 addresses look
> really ugly in 'who' and 'last' output because they're insanely
> truncated:

No they are ugly because it is an IP address and not a hostname.

The truncation is another issue that indeed should be tackled.
But then again, most 'wtmp' alike implementations have a bigger issue:
they do not store both IP and reverse thus making all kinds of attacks
possible.

Greets,
 Jeroen