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[Bug 905660] Re: [ifupdown] ipv6 refuse vlan interfaces

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Robert Sander <905660@xxxxxxxxxxxxxxxxxx>
Date: Sun, 10 Aug 2014 22:15:53 -0000
Reply-to: Bug 905660 <905660@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

It looks like ifupdown tries to configure the VLAN a second time when it
comes across the inet6 definition in /etc/network/interfaces.

This fails as the VLAN interface was already setup in the inet
definition of the same interface. It looks like a conceptual error in
the interfaces(5) syntax.

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https://bugs.launchpad.net/bugs/905660

Title:
  [ifupdown] ipv6 refuse vlan interfaces

Status in “ifupdown” package in Ubuntu:
  Fix Released

Bug description:
  Package: ifupdown
  Version: ifupdown 0.7~alpha5.1ubuntu5
  Severity: normal

  ifupdown (0.7~beta1) correct this bug :
      * Accept VLAN interface names (Closes: #632902).

  The interfaces file: (/etc/network/interfaces)
  auto eth0.77
  iface eth0.77 inet static
          address 192.168.1.50
          netmask 255.255.255.0
          gateway 192.168.1.1
  iface eth0.77 inet6 static
          address 2a01:6e00:1111:1111::2
          netmask 64
          gateway 2a01:6e00:1111:1111::1 

  => IPv4 is OK with VLAN77
  => IPv6 not mont with VLAN77  (IPv6 ok without VLAN)

  Bug with IPv6 auto : http://bugs.debian.org/cgi-
  bin/bugreport.cgi?bug=632902

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