[PATCH] remove unneeded ip6tables-save source/destination address output

[Daniel De Graaf <danield@iastate.edu>]

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ip6tables-save outputs the source and destination IPs when it is not
needed. This
is caused by an incorrectly copied check from iptables-save. Example
output:
- -A INPUT -s ::/0 -d ::/0 -i lo -j ACCEPT instead of just -A INPUT -i
lo -j ACCEPT

This patch will not output the address if the mask length is zero.

- - Daniel De Graaf

Index: ip6tables-save.c
===================================================================
- --- ip6tables-save.c    (revision 6699)
+++ ip6tables-save.c    (working copy)
@@ -125,7 +125,7 @@
        char buf[51];
        int l = ipv6_prefix_length(mask);
 
- -       if (!mask && !ip)
+       if (l == 0)
                return;
 
        printf("%s %s%s",
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