Suddenly: _IPEXPANDMAX

[Mark Felder]

On Mon, Feb 8, 2016, at 22:16, erdgeist wrote:
> Hey all,
> 
> I’ve recently (shortly after its EoL) upgraded my many-user-jails-box
> from 8.4 to 9.3 and noticed some of the jails failing to start. They all
> had in common that their IP address was above a certain suffix. Their IP
> addresses just were not configured on the interface.
> 
> After some investigation I found the hardcoded value _IPEXPANDMAX of 31
> in /etc/network.subr and that I basically can not run more than 31 jails
> on my server anymore, if I am not willing to do some insane stuff, like
> editing a non-user-servicable rc script or manually adding each IP
> address or combining different schemes to add ranges (I’ve been using
> ipv4_addrs_IF).
> 
> Now, I find the arbitrary limit of 31 IP addresses cumbersome and even
> more annoying that it’s not tuneable. The warning somehow also did not
> properly find its way to my /var/log/messages, which leaves further work
> for debugging.
> 
> I noticed this has been fixed in
> https://svnweb.freebsd.org/base/head/etc/network.subr?r1=267812&r2=271424
> 
> Is it possible to backport it to 9.4?
> 

I almost want to call this errata... and I don't really see harm in
backporting this.

-- 
  Mark Felder
  ports-secteam member
  feld at FreeBSD.org