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and subject line Bug#279864: Debian radvd Bug #279864
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To: Debian Bug Tracking System <[EMAIL PROTECTED]>
Subject: radvd: Parsing of /proc/net/if_inet6 not working correctly
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Date: Fri, 05 Nov 2004 14:32:23 +0100
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Package: radvd
Version: 1:0.7.2-6
Severity: normal
Tags: patch
radvd was not working for me and all the debug output only showed
"sendmsg: invalig argument". I did some investigation on the problem in
the source and found out that the local link address for the device is
not correct. For some reason the str_addr in setup_linklocal_addr()
only contained the last 9 characters of the address string in
/proc/net/if_inet6. I modified the code to use fgets() and sscanf()
instead of fscanf() and it worked.
Here is the patch:
--- device-linux.c.orig Thu Jul 11 23:23:10 2002
+++ device-linux.c Fri Nov 5 14:14:16 2004
@@ -109,7 +109,7 @@
FILE *fp;
char str_addr[40];
unsigned int plen, scope, dad_status, if_idx;
- char devname[IFNAMSIZ];
+ char buf[256], devname[IFNAMSIZ];
if ((fp = fopen(PATH_PROC_NET_IF_INET6, "r")) == NULL)
{
@@ -118,9 +118,9 @@
return (-1);
}
- while (fscanf(fp, "%32s %02x %02x %02x %02x %15s\n",
+ while ((fgets(buf, sizeof(buf), fp) != NULL) && sscanf(buf, "%32s %02x
%02x %02x %02x %15s\n",
str_addr, &if_idx, &plen, &scope, &dad_status,
- devname) != EOF)
+ devname) != 0)
{
if (scope == IPV6_ADDR_LINKLOCAL &&
strcmp(devname, iface->Name) == 0)
-- System Information
Debian Release: 3.0
Architecture: i386
Kernel: Linux deus 2.4.26 #21 Tue May 11 14:36:27 CEST 2004 i686
Locale: LANG=C, LC_CTYPE=C
Versions of packages radvd depends on:
ii libc6 2.3.2.ds1-18 GNU C Library: Shared libraries an
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To: Christoph Hohmann <[EMAIL PROTECTED]>
Cc: [EMAIL PROTECTED]
Subject: Re: Bug#279864: Debian radvd Bug #279864
References: <[EMAIL PROTECTED]> <[EMAIL PROTECTED]>
From: Andreas Rottmann <[EMAIL PROTECTED]>
Date: Sat, 21 May 2005 17:24:10 +0200
In-Reply-To: <[EMAIL PROTECTED]> (Christoph Hohmann's message of "Sat,
21 May 2005 15:11:19 +0200")
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Christoph Hohmann <[EMAIL PROTECTED]> writes:
> Andreas Rottmann wrote
>
>> There is now a comment of the maintainer; please provide the
>> additional information he requested, if you can.
>
> I tried the original code again and it is working now. I don't know why
> it was not working before.
>
Ok, im closing this bug now.
Rotty
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