Hello, I've been reading up on networks and comparing what the NAG from TDLP has to say and what my computer settings look like. Um... I did find a few differences (problems?). I will be upgrading to ADSL sometime soon and wanted to be more prepared as my ISP don't know nothing about Linux.
One thing which worries me is when I ask the route command to add or del a network or IP address I get this message.
SIOCADDRT: Invalid argument
or SIOCDELRT: No such process
When I ask it for information "route -e" I get back a table which includes an IP address I did not give it, and is not from My ISP. And of course I can't delete it using the "route del 163.254.0.0" command
Shelagh
Shelagh Manton wrote:
Hello, I've been reading up on networks and comparing what the NAG from TDLP has to say and what my computer settings look like. Um... I did find a few differences (problems?). I will be upgrading to ADSL sometime soon and wanted to be more prepared as my ISP don't know nothing about Linux.
One thing which worries me is when I ask the route command to add or del a network or IP address I get this message.
SIOCADDRT: Invalid argument
or SIOCDELRT: No such process
When I ask it for information "route -e" I get back a table which includes an IP address I did not give it, and is not from My ISP. And of course I can't delete it using the "route del 163.254.0.0" command
Are you sure it's not "169.254.0.0" rather than "163.254.0.0"?
What's the output of "netstat -rn" and what are the routes you want to add/remove?
Paul.
Paul Howarth wrote:
Shelagh Manton wrote:
Hello, I've been reading up on networks and comparing what the NAG from TDLP has to say and what my computer settings look like. Um... I did find a few differences (problems?). I will be upgrading to ADSL sometime soon and wanted to be more prepared as my ISP don't know nothing about Linux.
One thing which worries me is when I ask the route command to add or del a network or IP address I get this message.
SIOCADDRT: Invalid argument
or SIOCDELRT: No such process
When I ask it for information "route -e" I get back a table which includes an IP address I did not give it, and is not from My ISP. And of course I can't delete it using the "route del 163.254.0.0" command
Are you sure it's not "169.254.0.0" rather than "163.254.0.0"?
What's the output of "netstat -rn" and what are the routes you want to add/remove?
Paul.
Yes, when I look more carefully, that is the very IP address. I wanted to follow the instructions of the NAG where it says to add the 127.0.0.1 lo address with the route add command. The address it shows at present is 127.0.0.0 which is the lo network, and does not have 127.0.0.1 at all. Is this a problem?
[shelagh@pandorasbox shelagh]$ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 220.244.163.3 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.32.0 192.168.32.3 255.255.255.0 UG 0 0 0 eth0 192.168.32.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 220.244.163.3 0.0.0.0 UG 0 0 0 ppp0
What I'm eventually hoping to achieve is understanding of NAT so that my 2 sons machines can access the internet through my internet connected computer. But, just one slow step at a time, otherwise my brain might explode.
Shelagh
Shelagh Manton wrote:
Paul Howarth wrote:
Shelagh Manton wrote:
Hello, I've been reading up on networks and comparing what the NAG from TDLP has to say and what my computer settings look like. Um... I did find a few differences (problems?). I will be upgrading to ADSL sometime soon and wanted to be more prepared as my ISP don't know nothing about Linux.
One thing which worries me is when I ask the route command to add or del a network or IP address I get this message.
SIOCADDRT: Invalid argument
or SIOCDELRT: No such process
When I ask it for information "route -e" I get back a table which includes an IP address I did not give it, and is not from My ISP. And of course I can't delete it using the "route del 163.254.0.0" command
Are you sure it's not "169.254.0.0" rather than "163.254.0.0"?
What's the output of "netstat -rn" and what are the routes you want to add/remove?
Paul.
Yes, when I look more carefully, that is the very IP address. I wanted to follow the instructions of the NAG where it says to add the 127.0.0.1 lo address with the route add command. The address it shows at present is 127.0.0.0 which is the lo network, and does not have 127.0.0.1 at all. Is this a problem?
[shelagh@pandorasbox shelagh]$ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 220.244.163.3 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.32.0 192.168.32.3 255.255.255.0 UG 0 0 0 eth0 192.168.32.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 220.244.163.3 0.0.0.0 UG 0 0 0 ppp0
What I'm eventually hoping to achieve is understanding of NAT so that my 2 sons machines can access the internet through my internet connected computer. But, just one slow step at a time, otherwise my brain might explode.
127.0.0.1 is always tied to lo--which isn't a real interface. It's a pseudo interface, implemented completely in software, that allows a machine to talk to itself using network protocols. The 127.0.0.0/8 network is not routable over the internet and (technically) doesn't need an entry in a route table since there is no external connection. A route is present, so ALL network-related stuff appears to work.
169.254.0.0 is a Microsoft-invented thing for APIPA. This allows a machine to configure an IP address for itself in lieu of an available DHCP server giving it one. The machine polls the 169.254/16 network to find an unused address. If it finds one, it grabs it and uses it until a DHCP server becomes available and gives it a dynamic address. ---------------------------------------------------------------------- - Rick Stevens, Senior Systems Engineer rstevens@vitalstream.com - - VitalStream, Inc. http://www.vitalstream.com - - - - "Hello. My PID is Inigo Montoya. You `kill -9'-ed my parent - - process. Prepare to vi." - ----------------------------------------------------------------------
On Thu, 2005-03-03 at 09:05 +1100, Shelagh Manton wrote:
Paul Howarth wrote:
Shelagh Manton wrote:
Hello, I've been reading up on networks and comparing what the NAG from TDLP has to say and what my computer settings look like. Um... I did find a few differences (problems?). I will be upgrading to ADSL sometime soon and wanted to be more prepared as my ISP don't know nothing about Linux.
One thing which worries me is when I ask the route command to add or del a network or IP address I get this message.
SIOCADDRT: Invalid argument
or SIOCDELRT: No such process
When I ask it for information "route -e" I get back a table which includes an IP address I did not give it, and is not from My ISP. And of course I can't delete it using the "route del 163.254.0.0" command
Are you sure it's not "169.254.0.0" rather than "163.254.0.0"?
What's the output of "netstat -rn" and what are the routes you want to add/remove?
Paul.
Yes, when I look more carefully, that is the very IP address. I wanted to follow the instructions of the NAG where it says to add the 127.0.0.1 lo address with the route add command. The address it shows at present is 127.0.0.0 which is the lo network, and does not have 127.0.0.1 at all. Is this a problem?
[shelagh@pandorasbox shelagh]$ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 220.244.163.3 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.32.0 192.168.32.3 255.255.255.0 UG 0 0 0 eth0 192.168.32.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 220.244.163.3 0.0.0.0 UG 0 0 0 ppp0
What I'm eventually hoping to achieve is understanding of NAT so that my 2 sons machines can access the internet through my internet connected computer. But, just one slow step at a time, otherwise my brain might explode.
This all looks fine. You still didn't say which routes you wanted to add or delete. You can stop the zeroconf route appearing appearing by putting "NOZEROCONF=yes" in /etc/sysconfig/network; next time your machine reboots, it'll be gone.
Paul.
Paul Howarth wrote:
[stuff deleted]
[shelagh@pandorasbox shelagh]$ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 220.244.163.3 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.32.0 192.168.32.3 255.255.255.0 UG 0 0 0 eth0 192.168.32.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 220.244.163.3 0.0.0.0 UG 0 0 0 ppp0
[stuff deleted]
This all looks fine. You still didn't say which routes you wanted to add or delete. You can stop the zeroconf route appearing appearing by putting "NOZEROCONF=yes" in /etc/sysconfig/network; next time your machine reboots, it'll be gone.
Paul.
OK. I just wanted to add the 127.0.0.1 address as it said was a proper setup in NAG. I saw the 127.0.0.0 address and thought maybe that I'd setup an incorrect parameter at some earlier stage which worked but not optimally. Do all the gateway settings seem OK? Mine is the machine with the 192.168.32.3 IP. My 2 sons machines are -.1 & -.2. Is this a bad idea? Everything I've read suggests that I probably should be -.1 and they on larger numbers.
PS what's a zeroconf route. (exposing the depths of my ignorance here!)
Shelagh
On Thu, 2005-03-03 at 18:16, Shelagh Manton wrote:
PS what's a zeroconf route. (exposing the depths of my ignorance here!)
From what I have read and seen it is pretty much useless. I have yet to
see a group of systems spontaneously establish a network using those default IP addresses. Besides I'm not sure it is a good idea to let your system establish a network connection to potentially unknown systems. IMHO best to disable zeroconf on systems as part of the install process.
On Fri, 2005-03-04 at 10:16 +1100, Shelagh Manton wrote:
Paul Howarth wrote:
[stuff deleted]
[shelagh@pandorasbox shelagh]$ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 220.244.163.3 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.32.0 192.168.32.3 255.255.255.0 UG 0 0 0 eth0 192.168.32.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 220.244.163.3 0.0.0.0 UG 0 0 0 ppp0
[stuff deleted]
This all looks fine. You still didn't say which routes you wanted to add or delete. You can stop the zeroconf route appearing appearing by putting "NOZEROCONF=yes" in /etc/sysconfig/network; next time your machine reboots, it'll be gone.
Paul.
OK. I just wanted to add the 127.0.0.1 address as it said was a proper setup in NAG. I saw the 127.0.0.0 address and thought maybe that I'd setup an incorrect parameter at some earlier stage which worked but not optimally.
If you can ping 127.0.0.1 without the 127.x.x.x route there then your kernel is supplying the route implicitly and you don't need to add one manually. There is no need for a 127.x.x.x route on FC3 at least.
Do all the gateway settings seem OK? Mine is the machine with the 192.168.32.3 IP. My 2 sons machines are -.1 & -.2. Is this a bad idea? Everything I've read suggests that I probably should be -.1 and they on larger numbers.
Convention would be to have the router (gateway) at .1 and other machines at larger numbers. But it's only a convention; everything will work perfectly well with your router at .3.
PS what's a zeroconf route. (exposing the depths of my ignorance here!)
See http://www.zeroconf.org/ for an overview. If you have a working DHSP server on your network, you don't need zeroconf (might be useful on a laptop though, in case you end up somewhere with no DHCP server).
Paul.
Paul Howarth wrote:
[stuff deleted]
See http://www.zeroconf.org/ for an overview. If you have a working DHSP server on your network, you don't need zeroconf (might be useful on a laptop though, in case you end up somewhere with no DHCP server).
Paul.
Thanks for your help. It's cleared a few things up for me. Shelagh
-
Paul Howarth -
Rick Stevens -
Scot L. Harris -
Shelagh Manton