connect: Network is unreachable
 

Ok, so I have a machine that I previously ran with 7.1, which
has an integrated network interface (a SOYO Dragon with a VIA
chip set). Anyway, when I installed 7.1, I figured the board
was so new that it would be unlikely that there was support
for the onboard network interface, so I added a NIC right from
the start and everything worked great. Now since I re installed
with 7.2 I am having some trouble. During the install 7.2
recognized the onboard interface (the 7.1 install never even
detected it), so I figured I would configure both the onboard
and the NIC. Then if the onboard worked, I would pull the NIC,
or if not, I would just use the NIC. Well now niether works. I
can ping both the lo, eth0 and eth1 (which is the NIC) but when I
ping anything else I get the message

connect: Network is unreachable

I Would love to get the onboard interface
working, but I will settle for the NIC if I have to. Any
responses are greatly appriciated.

Here is some additional info from relevent commands.


# ifconfig

eth0 Link encap:Ethernet HWaddr 00:50:2C:00:B1:F8
inet addr:206.129.55.69 Bcast:206.129.55.79 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:
RX packets:78 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:12413 (12.1 Kb) TX bytes:168 (168.0 b)
Interrupt:11 Base address:0xec00

eth1 Link encap:Ethernet HWaddr 00:04:5A:54:45:FC
inet addr:206.129.55.68 Bcast:206.129.55.79 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:4 dropped:0 overruns:0 carrier:8
collisions:0 txqueuelen:100
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:10 Base address:0xd000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:52 errors:0 dropped:0 overruns:0 frame:0
TX packets:52 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3444 (3.3 Kb) TX bytes:3444 (3.3 Kb)

# cat /proc/interupts

CPU0
0: 74594 XT-PIC timer
1: 533 XT-PIC keyboard
2: 0 XT-PIC cascade
5: 0 XT-PIC usb-uhci
8: 1 XT-PIC rtc
10: 9 XT-PIC eth1
11: 102 XT-PIC eth0, cmpci
12: 859 XT-PIC PS/2 Mouse
14: 24265 XT-PIC ide0
15: 2384 XT-PIC ide1
NMI: 0
LOC: 0
ERR: 0
MIS: 0

# route -n

Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
206.129.55.64 0.0.0.0 255.255.255.240 U 0 0 0 eth1
206.129.55.64 0.0.0.0 255.255.255.240 U 0 0 0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo

# ifup eth0

# ifup eth1

# cat /etc/modules.conf

alias parport_lowlevel parport_pc
alias eth0 via-rhine
alias eth1 tulip
alias sound-slot-0 cmpci
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :
pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
alias usb-controller usb-uhci


# netstat -r

Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
206.129.55.64 * 255.255.255.240 U 40 0 0 eth1
206.129.55.64 * 255.255.255.240 U 40 0 0 eth1
127.0.0.0 * 255.0.0.0 U 40 0 0 lo

You are missing a default gateway. Try adding one with the route command.

well I tried adding the gateway and here is where I ended up.

Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
206.129.55.64 * 255.255.255.240 U 0 0 0 eth1
206.129.55.64 * 255.255.255.240 U 0 0 0 eth1
206.129.55.0 * 255.255.255.240 U 0 0 0 eth0
206.129.55.0 dragon.affoinfo 255.255.255.0 UG 0 0 0 eth0
206.129.55.0 * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default 206.129.55.49 0.0.0.0 UG 0 0 0 eth0

PING 206.129.55.49 (206.129.55.49) from 206.129.55.69 : 56(84) bytes of data.
From 206.129.55.69: Destination Host Unreachable
From 206.129.55.69: Destination Host Unreachable
From 206.129.55.69: Destination Host Unreachable

--- 206.129.55.49 ping statistics ---
5 packets transmitted, 0 packets received, +3 errors, 100% packet loss

so I gather I am not doing somthing correctly.

Also I can't seem to delete the ones I want to get rid of.

R u using a manufacture router (ie. linksys, d-link) or r u using a linux box? What distro?

I believe its a cisco router.

what is the default gateway of the router?
also can u ping any other url or ip addy at ur current config?

the gateway (router) address is 206.129.55.49 on my side. I don't know what it's address is externally.

the only IP adresses I can ping successfully are lo, eth0 and eth1.
I haven't even bothered with urls yet.

I'm not sure how this plays into it but our subnetmask is 255.255.255.240. route didn't seem to work when I tried to use this for the genmask.

Alright I think this is ur problem.....when u added the default gateway u also added the word default..so when u do a route -n u get
"default 206.129.55.49". Depending on what distro ur using u need to take that out and then try it agian..I'm running a linksys router and ur config isn't to much diff from mine. R u connected to a school network or something? did u also try changing ur Genmask to 255.255.255.0 and see'n what happens?

in the man pages it says you have to set up the static route to the gateway first before you can set up the default gateway route. I would assume that this would mean I would use a command like this to set up to set up routing to the local subnet.

# route add -net 206.129.55.0 genmask 255.255.255.240 dev eth0

I tried this and it didn't seem to make any diffence I still got the error:

connect: Network is unreachable

and it would not allow me to ad a default gateway at this point.

then I tried this

# route add -net 206.129.55.0 genmask 255.255.255.0 dev eth0

that seem to make it a little happier and at this point if I try to ping addresses with in the subnet, I get a message that looks something like this

[IP address] host is unreachable

where IP address was any IP within the subnet.

after that last command, even though I could not ping the gateway I was able to issue this command without error

# route add default gateway 206.129.55.49

also I think I am confused about the syntax to delete a spicific line from the routing table, I tried somthing like this and was unsuccessful

# route del 206.129.55.64

It returned an error and I think it said something like "no such process"

can someone give me an example of the output of the route -n command on a system that has the routeing table set up correctly?

Here is mine:
Destination Gateway Genmask Flags Metric Ref Use Iface
192.118.0.1 0.0.0.0 255.255.255.0 U 0 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 192.118.1.1 0.0.0.0 UG 0 0 0 eth0

of course those r not my real gateway/destination ip's....I'm using a linksys router w/ wireless acess point
.

Ok so I think things are starting to become a little clearer. Now I understand that the subnet mask of 255.255.255.240 means that there are blocks of 16 addresses (i.e. 0-15, 16-31, 32-47...)so we have apperently been aloted two blocks by our ISP, 48-63 and 64-79. So the route for the block in which my actual address exist was set up already by the config files except for the wrong device so I tried adding this:

# route add -net xxx.xxx.xxx.64 netmask 255.255.255.240 dev eth0

then in order to talk to the gateway, which is in the first block, I tried this

#route add -net xxx.xxx.xxx.48 netmask 255.255.255.240 dev eth0

So from what I understand this should allow me to communicate with all the IP addresses within our 2 address blocks but I am still getting the message

destination host unreacheable

for all the IP's in that range:confused: What am I missing?