Support Requests item #512515, was opened at 2002-02-03 15:01
You can respond by visiting:
http://sourceforge.net/tracker/?func=detail&atid=213751&aid=512515&group_id=13751
Category: Release/Branch: Dachstein
Group: None
>Status: Closed
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Mike Noyes (mhnoyes)
Summary: Buggy Alcatel adsl modem's dhcp server
Initial Comment:
Hello,
I'm trying to get my dachstein router working in
combination with my Alcatel Speedtouch ADSL modem.
It has an option for DHCP spoofing, so theorethically
al I need to do is setup DHCP on my external interface
and that's it.
Sadly, alcatel has made a buggy DHCP server-
implementation on their modems which has the "feature"
of only giving the last 3 bytes of the ip-adress
instead of the subnet mask.
The current dhclient doesn't really like this...
Could anyone provide a patched dhclient package which
resolves this issue or a modified dhcpclient-script
that hardcodes the subnetmask to 255.255.255.255 (i
think that should also do the trick).
I already found a patched version of client.c which
someone else wrote for pathing his RedHat install,
maybe it's useful for adressing this problem under LRP
Thanks in advance,
Thijs
*** client.c.orig Sun Aug 5 12:14:21 2001
--- client.c Sun Aug 5 12:22:12 2001
***************
*** 469,476 ****
memcpy(&p->sin_addr.s_addr,DhcpOptions.val
[subnetMask],4);
if ( ioctl(dhcpSocket,SIOCSIFNETMASK,&ifr) == -1 ) /*
setting netmask */
{
! syslog(LOG_ERR,"dhcpConfig: ioctl SIOCSIFNETMASK: %
m ");
! return -1;
}
memcpy(&p->sin_addr.s_addr,DhcpOptions.val
[broadcastAddr],4);
if ( ioctl(dhcpSocket,SIOCSIFBRDADDR,&ifr) == -1 ) /*
setting broadcast address */
--- 469,480 ----
memcpy(&p->sin_addr.s_addr,DhcpOptions.val
[subnetMask],4);
if ( ioctl(dhcpSocket,SIOCSIFNETMASK,&ifr) == -1 ) /*
setting netmask */
{
! p->sin_addr.s_addr = 0xffffffff; /* try
255.255.255.255 */
! if ( ioctl(dhcpSocket,SIOCSIFNETMASK,&ifr) == -1 )
! {
! syslog(LOG_ERR,"dhcpConfig: ioctl SIOCSIFNETMASK: %
m ");
! return -1;
! }
}
memcpy(&p->sin_addr.s_addr,DhcpOptions.val
[broadcastAddr],4);
if ( ioctl(dhcpSocket,SIOCSIFBRDADDR,&ifr) == -1 ) /*
setting broadcast address */
----------------------------------------------------------------------
>Comment By: Mike Noyes (mhnoyes)
Date: 2002-04-23 06:02
Message:
Logged In: YES
user_id=39521
No reply in over one month, so I'm closing this support request.
If you still have problems, please open a new support request.
----------------------------------------------------------------------
Comment By: Lynn Avants (guitarlynn)
Date: 2002-03-18 17:26
Message:
Logged In: YES
user_id=176069
Well, the source won't help much since it is in "C" and we
shell-script the dhcp scripts with LEAF. You could change
the netmask in all instances of "ip addr....", "ip
route...",and "ip link .....", but this would involve
going through roughly 300+ lines of code.
If you have a static option with the modem, it would be
consideably easier. LEAF firewalls all do ip spoofing by
default, so you are not gaining anything by using this
option with your modem.
Is this possible???
----------------------------------------------------------------------
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