Re: Can't net to router or beyond
(Writing from webmail, as my ISP's IMAP server is sick, so apologies for any formatting/etc issues.)
From: Meni Shapiro
> so...you got 2 machines on the same subnet which is: 192.168.123.x
> You are using a DHCP server from your router.
> I guess the router address is the gateway address which is:
> 192.168.123.254??
> and you are using a class C netmask...255.255.255.0...
>
> ok...
> So lets call machine A the one with the problem and machine B
> the one 'ok'.
> Can you ping from B to A??
No. I can ping (ssh, etc) from A to B, but not from B to A.
> Can you post the route tables of A??
I'm on unfamiliar territory here; I ran "route -v" and got these results:
Kernel IP routing table
Destination
Gateway
Genmask Flags Metric
Ref Use Iface
192.168.123.0
*
255.255.255.0 U
0
0 0 eth0
default 192.168.123.254
0.0.0.0
UG 0
0 0 eth0
> Are you running iptables??
Again, I'm on unfamiliar territory. I'm not sure one way or the other. This is what I get with the 2.4 (working) kernel:
westk@enjae:~$ sudo iptables -L
Chain INPUT (policy ACCEPT)
target prot opt
source
destination
Chain FORWARD (policy ACCEPT)
target prot opt
source
destination
Chain OUTPUT (policy ACCEPT)
target prot opt
source
destination
I'll have to reboot to get the output for the 2.6 kernel (which I'll do
later). But it's a stock kernel, so unless iptables is something that's
turned on within the kernel itself, I imagine the results will be
similar.
Earlier I was asked for the output of "lsmod" while booted into the 2.6 non-working kernel; here it is:
Module Size Used by
af_packet 22600 2
uhci_hcd 32784 0
usbcore 118308 3 uhci_hcd
via82cxxx_audio 30280 0
uart401 11844 1 via82cxxx_audio
sound
83372 2 via82cxxx_audio,uart401
soundcore 10400 2 via82cxxx_audio,sound
ac97_codec 18700 1 via82cxxx_audio
tulip 46880 0
dm_mod 59644 0
rtc
12728 0
capability 4616 0
commoncap 7296 1 capability
ide_cd 42528 0
cdrom 40284 1 ide_cd
ext3 126760 6
jbd
61848 1 ext3
mbcache 9284 1 ext3
ide_generic 1472 0
via82cxxx 13980 1
ide_disk 19264 8
ide_core
138724 4 ide_cd,ide_generic,via82cxxx,ide_disk
sd_mod 21696 0
ata_piix 8132 0
libata 41412 1 ata_piix
scsi_mod 124812 2 sd_mod,libata
unix 28660 0
font
8448 0
cfbcopyarea 3840 0
cfbimgblt 3072 0
cfbfillrect 3712 0
I've about decided the 2.6.8-2-k7 is just horribly broken. The
networking issues are the only thing I've posted about, but I have
several issues when booted into this kernel. (psmouse not loading,
therefore no mouse, video in console changing to hard-to-read light
gray during boot-up, fbset garbling the console screen beyond
recognition, sound being scratchy, etc). I'd try a different 2.6
kernel, but there doesn't seem to be another suitable k7-optimized
stock kernel available (which surprises me, because I thought the
debian repositories tended to have several versions available):
westk@enjae:~$ cat /etc/apt/sources.list
deb http://mirrors.kernel.org/debian/ unstable main contrib non-free
deb http://mirrors.kernel.org/debian/ stable main contrib non-free
deb http://security.debian.org/ stable/updates main contrib non-free
westk@enjae:~$ sudo aptitude search kernel-image-2.6
v
kernel-image-2.6
-
p
kernel-image-2.6-386
- Linux kernel 2.6.12 image on 386-class machines - trans
p
kernel-image-2.6-686
- Linux kernel 2.6 image on PPro/Celeron/PII/PIII/P4 mach
p
kernel-image-2.6-686-smp
- Linux kernel 2.6 image on PPro/Celeron/PII/PIII/P4 SMP
p
kernel-image-2.6-amd64-generic
- Linux kernel image for version 2.6 on generic x86_64 sy
p
kernel-image-2.6-amd64-k8
- Linux kernel image for version 2.6 on AMD64 systems
p
kernel-image-2.6-amd64-k8-smp
- Linux kernel image for version 2.6 on AMD64 SMP systems
p
kernel-image-2.6-em64t-p4
- Linux kernel image for version 2.6 on Intel EM64T syste
p
kernel-image-2.6-em64t-p4-smp
- Linux kernel image for version 2.6 on Intel EM64T SMP s
p
kernel-image-2.6-k7
- Linux kernel 2.6 image on AMD K7 machines - transition
p
kernel-image-2.6-k7-smp
- Linux kernel 2.6 image on AMD K7 SMP machines - transit
p
kernel-image-2.6.8-11-amd64-generic
- Linux kernel image for version 2.6.8 on generic x86_64
p
kernel-image-2.6.8-11-amd64-k8
- Linux kernel image for version 2.6.8 on AMD64 systems
p
kernel-image-2.6.8-11-amd64-k8-smp
- Linux kernel image for version 2.6.8 on AMD64 SMP syste
p
kernel-image-2.6.8-11-em64t-p4
- Linux kernel image for version 2.6.8 on Intel EM64T sys
p
kernel-image-2.6.8-11-em64t-p4-smp
- Linux kernel image for version 2.6.8 on Intel EM64T SMP
p
kernel-image-2.6.8-2-386
- Linux kernel image for version 2.6.8 on 386.
p
kernel-image-2.6.8-2-686
- Linux kernel image for version 2.6.8 on PPro/Celeron/PI
p
kernel-image-2.6.8-2-686-smp
- Linux kernel image for version 2.6.8 on PPro/Celeron/PI
i
kernel-image-2.6.8-2-k7
- Linux kernel image for version 2.6.8 on AMD K7.
p
kernel-image-2.6.8-2-k7-smp
- Linux kernel image for version 2.6.8 on AMD K7 SMP.
I don't really want to roll my own; I'd just as soon stick with 2.4 than do that.
If anyone wants to help beat this problem into submission, I'd be glad
to continue on; it'd be a good education. But if not, don't worry about
it; like I say, I'll just stick with 2.4 until another 2.6-k7 version
makes it into the repositories, or until I need to move to 2.6 for some
reason, at which time I may reconsider compiling my own.
(Just for the record; this all started when an upgrade to x.org broke
my older ATI TV card playback; it used to be that whenever an upgrade
of xserver-xfree86 hosed my playback, I could just drop in the ATI.2
drivers from GATOS and restart X; apparently the move to x.org broke
something there. I thought I'd try an upgrade to a 2.6 kernel to see if
that made any difference; it did, but in the wrong direction. D'oh!)
Thanks!
--
Kent
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