Date: Wed, 6 Oct 1999 18:27:20 +0200 (CEST) From: Jos Vissers <jos@islay.demon.nl> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/14169: natd only handles limited number of interfaces in ifreq list Message-ID: <199910061627.SAA62653@localhost>
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>Number: 14169
>Category: bin
>Synopsis: natd only handles limited number of interfaces in ifreq list
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Wed Oct 6 13:00:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Jos Vissers
>Release: FreeBSD 3.3-STABLE i386
>Organization:
>Environment:
>Description:
Natd can not find its interface from the ifreq list when the
total number of interfaces/aliases exceeds a maximum and the
nat-ed interface is beyond that maximum.
It then responds with "Unknown interface name".
I have vx0 with 13 addresses, fxp0 with 1, lp0 with 1,
and lo0 with 1 address, ppp0 and ppp1 are not assigned an
address and isp0 is the nat-ed inerface.
Natd can not find isp0 because the size of the ifreq list is
fixed at 32.
>How-To-Repeat:
Add a number of aliases to any interfaces before the nat-ed
interface. How many depends on the total number of
physical interfaces since ifr_addr.sa_len is larger for
the link layer interface.
>Fix:
Increase the size of the ifreq list to 64, unless there is a
reason to keep this at 32.
===================================================================
--- natd.c 1999/08/29 15:14:49 1.11.2.6
+++ natd.c 1999/10/06 16:23:13
@@ -704,7 +704,7 @@
static void SetAliasAddressFromIfName (char* ifn)
{
struct ifconf cf;
- struct ifreq buf[32];
+ struct ifreq buf[64];
char msg[80];
struct ifreq* ifPtr;
int extra;
>Release-Note:
>Audit-Trail:
>Unformatted:
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