[Bug 924880] Re: ipv4 broadcast address set to 0.0.0.0

[Stéphane Graber]

I'll be cherry-picking the required changes for now. Test package is
currently in my experimental PPA, upload is expected for later today or
early tomorrow.

** Changed in: ifupdown (Ubuntu)
     Assignee: Andrew Shadura (andrewshadoura) => Stéphane Graber (stgraber)

** Changed in: ifupdown (Ubuntu)
       Status: In Progress => Fix Committed

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Title:
  ipv4 broadcast address set to 0.0.0.0

Status in “ifupdown” package in Ubuntu:
  Fix Committed
Status in “ifupdown” package in Debian:
  Fix Committed

Bug description:
  ifupdown Version: 0.7~beta2ubuntu3

  Description:    Ubuntu precise (development branch)
  Release:        12.04

  
  if there is no broacast address in /etc/network/interfaces 

  auto eth0
  iface eth0 inet static
          address 192.168.1.252
          netmask 255.255.255.0

  ifup bring the interface up with 0.0.0.0 as broadcast address

  
  eth0      Link encap:Ethernet  HWaddr 00:0c:29:a4:d3:b7
            inet adr:192.168.1.252  Bcast:0.0.0.0  Masque:255.255.255.0
            adr inet6: fe80::20c:29ff:fea4:d3b7/64 Scope:Lien
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

  ifup runs
  ip addr add 192.168.1.252/255.255.255.0           dev eth0 label eth0


  adding broadcast 192.168.1.255 to /etc/network/interfaces
  ifup runs 
  ip addr add 192.168.1.252/255.255.255.0 broadcast 192.168.1.255           dev eth0 label eth0

  
  previously (using ifconfig), the broadcast address was correctly set via
  ifconfig eth0 192.168.1.254 netmask 255.255.255.0               up
  whithout requiring to set this address in /etc/network/interfaces

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