Strange “martian packets” on eth1

13 05 2010

I see tons of these errors on my laptop running PCLinuxOS 2010. Atleast in one occasion, I have seen the eth1 reset and the network disrupted.

[root@groundhog log]# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:12:F0:8E:4A:69
inet addr:192.168.1.113  Bcast:192.168.1.255  Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
RX packets:132 errors:9 dropped:9 overruns:0 frame:0
TX packets:18 errors:0 dropped:0 overruns:0 carrier:1
collisions:0 txqueuelen:1000
RX bytes:295924 (288.9 KiB)  TX bytes:25656 (25.0 KiB)
Interrupt:11 Memory:c0210000-c0210fff

/var/log/messages:

May 12 18:30:37 groundhog kernel: martian source 255.255.255.255 from 192.168.1.101, on dev eth1
May 12 18:30:37 groundhog kernel: ll header: ff:ff:ff:ff:ff:ff:00:0d:60:5d:dc:27:08:00
May 12 18:30:37 groundhog kernel: martian source 192.168.1.255 from 192.168.1.101, on dev eth1
May 12 18:30:37 groundhog kernel: ll header: ff:ff:ff:ff:ff:ff:00:0d:60:5d:dc:27:08:00
May 12 18:30:37 groundhog kernel: martian source 192.168.1.255 from 192.168.1.101, on dev eth1

May 12 18:30:37 groundhog kernel: ll header: ff:ff:ff:ff:ff:ff:00:0d:60:5d:dc:27:08:00

As I understand martian packets are unrecognized packets. Someone suggested this to supress them (not: not solve). Tried but didn’t work.
[root@groundhog log]# find /proc/sys/net/ipv4/conf/ -name “*martian*” -print
/proc/sys/net/ipv4/conf/all/log_martians
/proc/sys/net/ipv4/conf/default/log_martians
/proc/sys/net/ipv4/conf/lo/log_martians
/proc/sys/net/ipv4/conf/eth0/log_martians
/proc/sys/net/ipv4/conf/irda0/log_martians
/proc/sys/net/ipv4/conf/eth1/log_martians
/proc/sys/net/ipv4/conf/tun0/log_martians
[root@groundhog log]# file /proc/sys/net/ipv4/conf/eth1/log_martians
/proc/sys/net/ipv4/conf/eth1/log_martians: empty
[root@groundhog log]# echo “0” > /proc/sys/net/ipv4/conf/eth1/log_martians

That didn’t help. So for now Iam turning this interface off. (I have wired connection as well, so I can afford to turn this off for now). This is a topic for another day …

Advertisements




Syncing Google Calendar and Contacts with Thunderbird

29 10 2007

Keeping Google Calendar and Lightening in sync

Thunderbird

This works for both Thunderbird caleder (Lightening) or the standalone Sunbird. The choice is matter of taste, since both offer the same functionality. But I fo

und the TB version more customizable (may be its just that I did n’t look harder on sunbird.

  • New Calendar
  • Select “On the Network”
  • Select Google Calendar (if you don’t see this option,then you don’t have the Provider extension installed right)
  • Enter your Private XML address of your Google Calendar (Under Manage Calendar/Private Address section)

Enjoy the comfort of desktop calendering with the features of Google Calendar!

Keeping Addressbook in sync:

Here is post explaining how to sync contacts. using KolabSync extension.





Media sharing and streaming in Linux

28 10 2007

audioWith Linux, this is a breeze :
GNUMP3d : provides http listing of music. Very versatile.

Icecast: streaming server

Ices: scriptable client (source) for icecast. Use ices 0.4 to stream mp3s (deprecated for Ogg vorbis in latest). Or XMMS can be used too, but I like the silent servers like ices. (xmms like given here for reference, any decent distro worth its name should pre install xmms, or at least provide a package). Ices, with its script hook, provides infinite possibilities.

GMediaServer: UPnP server





KDE vs GNOME – XFCE is the winner

26 10 2007

xubuntu.pngI see people going at elaborate lengths to defend or defame one or the other. I have tried KDE way back … After I saw Mike L run kubuntu, I tried it for a short time at home and I guess Iam gnomed enough not to like it. Its just too sharp and too polished for my taste.

Increasingly though, I have a feeling GNOME is getting sluggish. My laptop virtually comes to a grinding halt sometimes. Few months back, I tracked it to missing swap partiton (I wonder how the hell that happened) and fixed it. This time around though, I have swap, a good 1G.

root@snoopy:~# cat /proc/swaps
Filename Type Size Used Priority
/dev/sda5 partition 1028120 90068 -1
root@snoopy:~# free
total used free shared buffers cached
Mem: 514672 495536 19136 0 9068 117760
-/+ buffers/cache: 368708 145964
Swap: 1028120 90068 938052

I remember trying PCLinuxOS in desperation last time this happened (That was lightning fast by the way) only to return back to the comfort of Ubuntu repository. This time, Iam less drastic and tried the xfce instead of Gnome. So far, I don’t see any hiccups.





Adventures in Digital Photography With Linux – multi part

25 10 2007




Network issues with Ubunty 7.10 ?

25 10 2007

Gusty having network issues due to IPv6 and DNS? Iam not sure if this is just few network cards.





Linux HDD wear and tear

25 10 2007

Here is an interesting thread that says Ubuntu Linux (I would think Linux in general) puts more wear on HDD and a possible soultion.