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[Bug 850566] Re: does not configure ipv6 vlan interfaces due to autoconf sysctl failure

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Thiago Martins <thiagocmartinsc@xxxxxxxxx>
Date: Wed, 13 Aug 2014 04:07:13 -0000
Reply-to: Bug 850566 <850566@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

As a great workaround, I stopped using VLAN interfaces like "eth0.X",
and now I'm using it like this "vlanX"... It is working better (still no
not  free of problems).

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https://bugs.launchpad.net/bugs/850566

Title:
  does not configure ipv6 vlan interfaces due to autoconf sysctl failure

Status in “ifupdown” package in Ubuntu:
  Fix Released

Bug description:
  upon upgrade to 11.10 the ipv6 vlan interface is not configured correctly, leaves it in a half configured state.
  ipv4 configured properly, but not ipv6

  #/etc/network/interfaces

  iface eth0.83 inet static
    address 192.168.83.2
    netmask 255.255.255.0

  iface eth0.83 inet6 static
    autoconf 0
    address 2002:XXXX:XXXX:53:XXX:XXXX:XXXX:XXXX
    netmask 64

  The failure is due to the sysctl calling net.ipv6.conf.eth0.83.autoconf = 0, which is incorrect since the dot is interpreted incorrectly, it should be
  net.ipv6.conf.eth0/83.autoconf = 0

  Fixed in 0.7~beta1

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