What's new on the 127.0.0/24 block in 7?

[Edwin Groothuis]

On Mon, Mar 03, 2008 at 07:39:44PM -0800, Chris H. wrote:
> Quoting Edwin Groothuis <edwin at mavetju.org>:
> 
> >On Mon, Mar 03, 2008 at 07:23:59PM -0800, Chris H. wrote:
> >>Quoting Andy Dills <andy at xecu.net>:
> >>
> >>>On Mon, 3 Mar 2008, Chris H. wrote:
> >>>
> >>>>Greetings,
> >>>>I'm having some difficulty working with anything past 127.0.0.1.
> >>>>It seems impossible to use (create) any addresses on the "loopback"
> >>>>past 127.0.0.1.
> >>>>More specifically; I installed rbldnsd from ports, and it worked quite
> >>>>well on a 6.x install. However, attempting the same config/install on
> >>>>a 7-RC3 install yields the inability to bind/create 127.0.0.2, or
> >>>>127.0.0.3 for rbldnsd to answer on - all queries are refused. The
> >>>>same pinging/digging, etc.
> >>>>
> >>>>The 2 servers have /exactly/ the same net setups, and DNS/rbldnsd
> >>>>configs. Yet no joy on the RELENG_7 box. So it /appears/ something
> >>>>in this area has changed since 6. But I'm unable to discover any
> >>>>info on it.
> >>>>
> >>>>Thank you for all your time and consideration.
> >>>
> >>>What subnet mask did you use when creating the 127.0.0.2 (etc) interfaces
> >>>on lo0?
> >>>
> >>>On 7.0-R, I just ifconfig'ed 127.0.0.2 as an alias to lo0 with a subnet
> >>>mask of 255.255.255.255, and I was able to bind/listen/accept on it with
> >>>no problem.
> >>
> >>Indeed. I have several /24's to manage, and alias the bulk of them to
> >>the NIC on the server(s). But, having /identical/ configurations/setups
> >>of FreeBSD, and rbldnsd on two different servers; the recent RELENG_6
> >>server desires/requires no alias on lo0, and happily provides a 127.0.0/24
> >>While the same setup on a 7-RC3 will only provide 127.0.0.1. Which
> >>brings me to my original question; What's different on 7 regarding the
> >>127.0.0/24 block?
> >
> >Are you sure it's a /24 you are talking about? My 7.0 disks install
> >127.0.0.1/8 here.
> 
> Really? Where did you get the install disc? Mine clearly doesn't. :(
> All I am provided is 127.0.0.1 - not 127.0.0.2,3...

By default it will only generate 127.0.0.1.
Reading through the thread (which only caught my eye because of the
/24 there) showed a lot of confusion.

Could you to take this confusion away tell again why you (think
you) need the other ones?

Edwin

-- 
Edwin Groothuis      |            Personal website: http://www.mavetju.org
edwin at mavetju.org    |              Weblog: http://www.mavetju.org/weblog/