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Linux Development & Programming / NDP : Duplicate packets send by Kernel
« Last post by newbie_aqs on November 27, 2012, 02:23:30 PM »
I have tried to develop and implement NDP(Neighbor Discovery Protocol) in Linux based PC's  refering RFC 4861.

I have created a  socket "socket (AF_INET6, SOCK_RAW, IPPROTO_IPV6)".  NS/NA packect (ipv6 header + icmpv6 header+options) are filled and send by developer itself .

In Wireshark,I have monitored that NS packet which I have filled is being send + Kernel sends NS packets of its own and receives NA packets.

So I am confused and stuck in my work. Can anyone please help and explain

1.why this duplicate packets generated by kernel of its own?

2.If kernal handles ICMPv6 packets, which is the scenario where NDP should be developed and implemented? 

Thanks in advance :)
Os Talk / Re: If linux is free why is Africa not using it
« Last post by dalek on November 27, 2012, 02:04:47 PM »
I have read where a lot of places in Africa uses Linux.  I have seen where people donate computers, recycled ones, to some of the poorer places and they generally have Linux on them.  It may not be popular where you live but it is in other places.  Linux is a great OS once a person gives it a fair try out.  Now if a person goes in with the intention to not like, odds are they won't.  Basically, Linux does what windoze does only better.  Most are free too.  You just download them and install.  They do take donations tho.

 :)    :)
Os Talk / Re: Why I am moving to linux
« Last post by dalek on November 27, 2012, 01:51:48 PM »
Since you are new to Linux, I would recommend Mandriva or Kubuntu.  Since you are switching from windoze, you should give the KDE desktop a try.  It is more like windoze.  You can get Kubuntu here:


Mandriva here:


I recently switched my brother from windoze to Kubuntu and it was pretty easy.  The install process for both are pretty close and GUI based.  Some distros are text based for the install.  Here is a link for Ubuntu based install:


Here is a howto for Mandriva:


I have not read through those guides but they should help.  As always, things can change but the basics are this, partition, configure and let it install.  If something doesn't work right, just google for the distro and add 'install howto'.  You should get plenty of links. 

Don't worry about some having a 2011 stamped on them.  That is just for the CD/DVD software.  Once you get the install done, you upgrade to the latest, just like windoze does. 

I have never installed anything Microsoft on my rigs.  I have been using Linux for a good long while.  It is nice to not have to worry about viruses and such.  I might also add, it runs better on older systems too.  My brothers rig had windoze XP on it.  It was getting really slow.  That was with the older OS.  I put a new Linux with KDE4 on it and it still runs faster plus the software is newer too. 

The only thing that needs to be addressed is modem and video cards.  Sometimes you have trouble with software based modems.  Also, sometimes you have to download video drivers manually and install them.  They usually have a step by step guide tho.  Generally, the install is the hardest part. 

Welcome to Linux. 

 :)    :)
Miscellaneous / Re: Diffrence between rpm, src.rpm, tar.gz, .Z, tgz, tar.bz2
« Last post by gazalovespells on November 27, 2012, 09:57:23 AM »
thanks a great explanation

Os Talk / If linux is free why is Africa not using it
« Last post by gazalovespells on November 27, 2012, 09:54:30 AM »
The constant cry in African countries like mine (South Africa) is that we are constantly crying that we dont have enough resources.

So why dont we just make use of the linux operating system, its free and it offers a better opportunity for discovery, learning and innovation than any other operating system.

Personally i am going to market Linux to all internet cafe's in South Africa as a solution to their perennial problems of viruses.

Just need a way to make some great windows softwares to run in Linux.
Os Talk / Why I am moving to linux
« Last post by gazalovespells on November 27, 2012, 09:45:59 AM »
I have finally decided to make the move to Linux,

Although i should confess I am a bit spoilt for choice on deciding which version/type (whatever you guys call it).

I am also trying to grasp the Linux Lingua franca

I am moving from Windows because I am tired of viruses. tired of slow pc's.

and on hearing that the majority of servers are run on linux, i was convinced that linux is the best system for me

Linux Servers Support / Re: ftp between computers
« Last post by fullofhope on November 23, 2012, 03:01:10 PM »
Solved it!!!!
I knew it had to be very simple, or other people would have been asking the same.
Here goes.
Configure computer (i.e.Control Center).
Configure ftp.
Go through the several panes and unclick the box that says 'chroot home user'
Then it works. You can ftp into all the other partitions.
Hope this helps someone.
Now my remaining very simple problem - - -
From the left hand computer to the right hand - - it works.
Other way round - - 530 access deny. You have no right to be here!
All the permissions are identical.
Oh well you can't have everything.
Linux Servers Support / Re: ftp between computers
« Last post by dalek on November 20, 2012, 07:17:52 PM »
Check the permissions.  That sounds like a permission problem but GUI's are a bit different on those types of errors.  It's been a while since I fired up my 2nd rig so I can't recall the details. I'm also bad to just login as root too.  lol

 :)    :)
Linux Servers Support / Re: ftp between computers
« Last post by fullofhope on November 20, 2012, 04:56:56 PM »
Tried the final suggestion:


It just says "could not enter folder /media"
Linux Servers Support / Re: ftp between computers
« Last post by dalek on November 20, 2012, 04:42:18 PM »
Hmmm, sort of the same thought here.  Simple but I don't know if this will work or not.  Do you have a file called .bash_login in the home directory?  Something like this:

Code: [Select]
root@fireball / # ls -al /home/dale/.bash_logout
-rw-r--r-- 1 dale users 127 Dec  8  2008 /home/dale/.bash_logout
root@fireball / #

The contents of my file for a user is this:

Code: [Select]
root@fireball / # cat /home/dale/.bash_logout
# /etc/skel/.bash_logout

# This file is sourced when a login shell terminates.

# Clear the screen for security's sake.
root@fireball / #

All it does is clear the screen.  For my root user:

Code: [Select]
root@fireball / # cat /root/.bash_login
setterm -powersave off -blank 0
cd /
root@fireball / #

On this one, it disabled the powersave since I want to see my screen when compiling in a console.  Long story. 

Since you are using a GUI to do this, I'm not sure it will work.  I would put the following in the file for whatever user you are using and see if it works:

Code: [Select]
cd /media/Slideshows

I'm not sure if the GUI browsers read that file tho.  Just add it to it and see if it works.  If not, just remove it again. 

You may also want to try:

Code: [Select]

Since you are typing that into the GUI, it should see that. 

I gave examples to sort of let you see that the file accepts commands just like you type into a console.

Hope that helps. 

 :)    :) 
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