Bug#764697: systemd: enable ipv6 by default at least for "lo"

[Gert Wollny]

Package: systemd
Version: 215-5+b1
Severity: wishlist

Dear Maintainer,

currently in /etc/sysctl.d/99-sysctl.conf provided by the systemd
package ipv6 seems to be disabled by default i.e. 

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.eth0.disable_ipv6 = 1

This breaks cups: #747073. 

The package default should at least enable ipv6 for the loopback
interface. For me  

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

made cups start again properly. 

many thanks 
Gert 

-- Package-specific info:

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (200, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16-2-amd64 (SMP w/6 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages systemd depends on:
ii  acl               2.2.52-2
ii  adduser           3.113+nmu3
ii  initscripts       2.88dsf-53.4
ii  libacl1           2.2.52-2
ii  libaudit1         1:2.4-1
ii  libblkid1         2.20.1-5.11
ii  libc6             2.19-11
ii  libcap2           1:2.24-6
ii  libcap2-bin       1:2.24-6
ii  libcryptsetup4    2:1.6.6-1
ii  libgcrypt20       1.6.2-3
ii  libkmod2          18-3
ii  liblzma5          5.1.1alpha+20120614-2
ii  libpam0g          1.1.8-3.1
ii  libselinux1       2.3-2
ii  libsystemd0       215-5+b1
ii  openrc [sysv-rc]  0.12.4+20131230-9
ii  udev              215-5+b1
ii  util-linux        2.20.1-5.11

Versions of packages systemd recommends:
ii  dbus            1.8.8-1+b1
ii  libpam-systemd  215-5+b1

Versions of packages systemd suggests:
pn  systemd-ui  <none>

-- no debconf information

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