Hey Steve,
A while back you posted a MASQ MTU patch that was supposed to
fix our MTU issue. Did you find out if it fixed the problem
or not?
Also.. this is the patch I have for it but it doesn't look
complete. Is it? Could you repost it if it isn't complete?
--David
At 07:10 PM 12/1/97 +0000, Steven Clarke wrote:
>On Mon, 1 Dec 1997, Penio Penev wrote:
>
>> On Sun, 30 Nov 1997, David A. Ranch wrote:
>>
>> > >But the moment I try to get data from a Netscape-Enterprise/2.01 server
>> > >the connection hangs from the internal hosts. Here is a telnet
>> > >transcript:
>>
>> Hangs forever, that it. Not hang ups.
>>
>> > Just curious.. what is your MTU set to on the modem?
>>
>> ppp0 Link encap:Point-Point Protocol
>> inet addr:206.98.xxx.xxx P-t-P:206.98.xxx.yyy Mask:255.255.255.0
>> UP POINTOPOINT RUNNING MTU:296 Metric:1
>> RX packets:212832 errors:394 dropped:394 overruns:0
>> TX packets:129270 errors:0 dropped:0 overruns:0
>
>I think you've hit to Masq/MTU bug. Please try recompiling your kernel
>with the attached patch.
>
>In detail:
> Can to the directory containing the kernel source that you want to compile
> patch -p1 <../linux-ip-fragment-fix.patch (this file)
> make dep ; make clean ; make zlilo ; make modules ; make modules_install
> reboot onto the new kernel.
>
>Can you please report back to the list if this helps or not.
>
>As an alternative, try increasing the MTU on the ppp0 interface to 1500 -
>however, it would be better if you could try the patch first as this
>appears to be a serious bug that needs fixing.
>
>Steve Clarke
>diff -u --recursive --new-file linux/net/ipv4/ip_fragment.c.old
linux/net/ipv4/ip_fragment.c
>--- linux/net/ipv4/ip_fragment.c.orig Tue Aug 12 19:30:25 1997
>+++ linux/net/ipv4/ip_fragment.c Fri Nov 14 12:19:25 1997
>@@ -584,7 +584,17 @@
> */
>
> tfp = NULL;
>- tfp = ip_frag_create(offset, end, skb, ptr);
>+
>+ if (offset<end)
>+ tfp = ip_frag_create(offset, end, skb, ptr);
>+ else {
>+ static unsigned long frag_warning_time = 0;
>+
>+ if (jiffies - frag_warning_time > HZ*60) {
>+ frag_warning_time = jiffies;
>+ printk(KERN_INFO "IP: Invalid IP fragment (offset > end) found
>from
%d.%d.%d.%d\n", NIPQUAD(iph->saddr));
>+ }
>+ }
>
> /*
> * No memory to save the fragment - so throw the lot. If we
.----------------------------------------------------------------------------.
| David A. Ranch - Linux/Networking/PC hardware [EMAIL PROTECTED] |
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