[lwip-devel] [bug #47897] ipv6_addr: Render last zero in ip6addr_ntoa_r if not in first zero block

[Jan Breuer]

URL:
  <http://savannah.nongnu.org/bugs/?47897>

                 Summary: ipv6_addr: Render last zero in ip6addr_ntoa_r if not
in first zero block
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: jan_breuer
            Submitted on: Wed 11 May 2016 04:22:46 PM GMT
                Category: IPv6
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: git head

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Details:

In original ip6addr_ntoa_r implementation, rendering of address "2001::1:0"
results in "2001::1:". 

Result has missing last zero and is also invalid IPv6 address format.

This faulty behaviour can happen for all IPv6 addresses already containing
zero block "::" and also has last value as zero.

Attached patch is solving this issue.



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File Attachments:


-------------------------------------------------------
Date: Wed 11 May 2016 04:22:46 PM GMT  Name:
0001-ipv6_addr-Render-last-zero-in-ip6addr_ntoa_r-if-not-.patch  Size: 876B  
By: jan_breuer

<http://savannah.nongnu.org/bugs/download.php?file_id=37130>

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