Bug#656605: libnetaddr-ip-perl: ip->addr() should follow RFC5952 Section 2.2 (Zero Compression)

[Florian Lohoff]

Package: libnetaddr-ip-perl
Version: 4.058+dfsg-2
Severity: normal


Hi,

libnetaddr-ip-perls ->addr function should follow the recommended representation in RFC5952,
not only print lowercase as default (i have seen the qw(:lower) switch) but also use
maximum zero compression as in 2.2 of the RFC5952:

--------------------------------------- quote -----------------------------------
2.2. Zero Compression


      'A special syntax is available to compress the zeros.  The use of
      "::" indicates one or more groups of 16 bits of zeros.'

   It is possible to select whether or not to omit just one 16-bit 0
   field.

      2001:db8:aaaa:bbbb:cccc:dddd::1

      2001:db8:aaaa:bbbb:cccc:dddd:0:1

   In cases where there is more than one field of only zeros, there is a
   choice of how many fields can be shortened.

      2001:db8:0:0:0::1

      2001:db8:0:0::1

      2001:db8:0::1

      2001:db8::1

   In addition, Section 2.2 of [RFC4291] notes,

      'The "::" can only appear once in an address.'

   This gives a choice on where in a single address to compress the
   zero.

      2001:db8::aaaa:0:0:1

      2001:db8:0:0:aaaa::1
--------------------------------------- quote -----------------------------------


-- System Information:
Debian Release: 6.0.3
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.0.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libnetaddr-ip-perl depends on:
ii  libc6                  2.11.2-10         Embedded GNU C Library: Shared lib
ii  perl                   5.10.1-17squeeze2 Larry Wall's Practical Extraction 
ii  perl-base [perlapi-5.1 5.10.1-17squeeze2 minimal Perl system

Versions of packages libnetaddr-ip-perl recommends:
ii  libsocket6-perl               0.23-1     Perl extensions for IPv6

libnetaddr-ip-perl suggests no packages.

-- no debconf information