Ubuntu Networking :: Error - "route: Netmask Does Not Match Route Address"
Jan 25, 2011
Having trouble getting my Netgear WNA1000 working thru wireless router. Have tried lots of suggestions from other threads to no avail. Someone suggested that th routing table isn't set correctly, so have been trying to use the follwing to make the proper entry in the routing table: sudo route add -net 192.168.0.1 netmask 255.255.255.0 dev wlan0
Result: error message stating with:
"route: netmask does not match route address"
followed by "Usage" instructions which tell me to do what I just did. Any ideas on how I can populate my routing table with correct entry for my wireless card? Not to complicate matters, but I temporarily turned off encryption on my router to eliminate that as a possibility until I get connected. So maybe it'still trying to connect via encrypted mode - do I need to turn off encryption on my (client) end?
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May 31, 2010
Code: route add -net 192.168.98.0 netmask 255.255.255.0 gw 192.168.99.1 -net 192.168.98.0 , is it for ip address of the client/host? man route says , "target is a network".What does it mean?
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Jun 10, 2009
have two internet lines from two isp every one pluged to interface eth0 and eth1 and i have eth2 interface to internel network clients now i need to make some clients to use line 1 and other use line 2 i want make this without use netmask , just for selected IP.
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May 8, 2011
I have 3 network interfaces on my Linux Router :
Interface - Gateway - Type
Code:
br0 - 192.168.0.1 - Internet
eth2 - 192.168.1.1 - LAN
tun0 - 10.0.0.2 - VPN (via br0)
What I'd like to do is to route all TCP packets coming from eth2 to tun0 where a VPN client is running on 10.0.0.2. If I delete all default routes and if I add a new route to tun0 like :
Code:
route del default
route add default gw 10.0.0.2
Everything is fine, and everyone on eth2 can reach the Internet using the VPN access. Now the problem is that my VPN client does not allow any other protocols other than TCP. And I also want to allow VPN access only to eth2, no other LAN nor the router itself. use iptables to filter any TCP packets and mark them, so they can be sent to tun0, while any other packets can reach the Internet via br0 (192.168.0.1). I found on the Internet that we can mark packets before they get routed. Using the following commands :
Code:
iptables -t mangle -A PREROUTING -j MARK --set-mark 85 -i eth2 -p tcp --dport 80
ip route add table 300 default via 10.0.0.2 dev tun0
ip rule add fwmark 0x55 table 300
First of all, --dport 80 never work... :/ I wanted to filter TCP 80 packets coming from eth2, but none of them seems to be HTTP packets... oO (very strange...). Nevermind, I decided to forget about the --dport option. I use the "iptables -L -v -t mangle" command to see how many packets are marked, and it is working fine, all TCP packets coming from eth2 are marked. Now the problem is that none of them are routed to tun0 they are all respecting the "route -n" rules... and not the "table 300" rule I have created.
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Apr 29, 2009
I would like to add a static route, however I do not understand what is meant by the Address setting below
GATEWAY2=10.241.58.62
NETMASK2=255.255.255.224
ADDRESS2=10.241.57.32
Does this mean any addresses beginning with 10.241.57.32 are routed over the gateway 10.241.58.62 an address range
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Oct 21, 2010
I got this definition:"a process that replaces a series of related, specific routes in a route table with a more generic route." honestly I found it not so clear.. I want to know if this definition is correct and also more details about this subject..
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Sep 8, 2010
I have a server with 2 network cards. eth0 is used for all traffic and everything is working fine on this side. Eth1 is used for traffic to and from 1 ip address.
Lets say the ip address of eth1 is 123.123.123.10 and its gateway is 123.123.123.1. I need to pass all traffic to 123.123.123.20 through eth1. What command would i use?
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Mar 4, 2010
My ISP has given me 3 IP addresses to use for the internet (76.148.200.3, 76.148.200.4 and 76.148.200.5).
If I do a "wget whatismyip.com" or netcat into another server, I am appearing as 76.148.200.3.How do I change my route (command line) in linux to route internet traffic through 76.148.200.5?
Code:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
code....
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Dec 11, 2010
I'm working on a userspace application that needs to find if the kernel has a route configured for a particular destination address, and what port it would be routed from. I'm hoping there is a simple kernel call that will do this for me, but haven't been able to find it yet :-)
I don't want to actually send a packet to do this, just query the kernel if where it *would* send the packet if I did.
The only method I've come up with is to get the kernel routing table through rtnetlink then check each entry to see if it matches my destination address. I guess this will work (after one or two tries to get the logic right ;-) ) but I'd rather do a single call if there is one.
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Apr 3, 2010
I am using Fedora-10 on 64-bit quad-core xeon processors. I ran ssh-keygen and established passwordless connection between host-client and created a host file named lamhosts as follows:
172.16.122.11 cpu=4
172.16.122.21 cpu=4
where 11 is the host server and 21 is one of the nodes. When I executed 'lamboot -v lamhosts', it failed to boot nodes ssi:boot:base:linear: Failed to boot n1 (172.16.122.21). By googling, I found the error but couldn't yet find a solution.
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Sep 3, 2010
I am trying to share directories between two F12 machines on a local network with a router box doing DHCP because not all machines on all the time. Web access is fine and local ping and ssh works but telnet doesn't. I have never succeeded doing mounts. So I have been searching for things to fix the above and have just tried rpcinfo. If I do this :
rpcinfo -p 192.168.2.2 it gives rpcinfo: can't contact portmapper: RPC: Remote system error - No route to host. Does that suggest that actually there is an installation problem? So I tried "yum provides portmapper" and that gives "No Matches found".
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Jul 29, 2009
I have 2 clients (one IP 200.x.y.52 and another 200.x.y.47) in ADSL conection and a same gateway (200.x.y.1).
When the server send an email, the error "No route to host" appear. I used TELNET 200.x.y.52 25 (110 soo) and the error occurr in both servers and both directions. The Firewall was disabled .
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May 12, 2010
i wanaa to config tlenet server and did the steps to enable it
but when i try to connect to server this error show :
telnet : connect to address 10.0.0.100 : No route to host
telnet : Unable to connect to remote host : No route to host
[URL]
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Aug 3, 2010
I have a question regarding OpenVPN. I have configured my own vpn server. It is in a private network 192.168.0.0. The ip addresses I am using for the vpn connection are in the 10.9.1.0 network but I want to connect my ovpn clinets to the 192.168.0.0 network. I read the manuals and I think the "push route" command will work for me, but I cannot understand fully the description of the command "push route".
# Push routes to the client to allow it to reach other private subnets behind the server.
# Remember that these private subnets will also need to know to route the OpenVPN client
# Address pool (10.8.0.0/255.255.255.0) back to the OpenVPN server.
;push "route 192.168.10.0 255.255.255.0"
;push "route 192.168.20.0 255.255.255.0"
So the questions:
1. These private subnets behind the server are routed from my vpn server or from another router
2. How these private subnets "know to route" the open vpn address pool, is this a configuration of the router for this networks (192.168.0.0)or ?
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May 11, 2009
I would like, from a C program, find the hardware MAC address of the default route path. With BASH I can do a 'route' find 'default and then an ifconfig and grep for 'HWaddr'. Are there C calls to do the same??
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May 6, 2010
I've just switched from xub to lub, and I must say it's a lot lot faster. There's just one really annoying problem (I have no idea if this is in any way related to LXDE or if it's just due to 10.04): Network Manager only starts about a minute after the rest of the desktop. So my system boots up, I log in, see the applet, but it is greyed out (it tells me "Network Manager is disabled" or something similar). After a minute (approx), it suddenly comes to life and connects me. Now, I think this only happens when I have:
A) set the wireless connection to "all users"
B) given an empty password for the keyring
But when I cancel either of the two above, it doesn't stop it from happening. I've tried updating etc.. to no avail. I've also tried wicd, but for some reason installing wicd from synaptic doesn't remove Network Manager? Anyway, has anyone seen behaviour like this? Any suggestions for first steps to take to see where it's blocking?
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Jan 8, 2011
I am using fedora 14..i wanna create webservice in fedora 14...i am able to create sevice in server machine...but the client not able to get service from the server.it shows an error an i/o error has occured.no route to host.....we checked the ip address and port...i am able to ping the server...its connecting ...but it shows this error...?
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May 25, 2010
I installed ntop on our server, after installing it, i ran ntop as a daemon. shortly after we lost the ability to ssh into the server.tried restarting ssh, but it didn't work, so had to restart the entire server.Where should we look to find why ssh suddenly stopped?
the error ssh gave when we try to connect was like: ssh: no route to host what log files should i look at and what should i look for to find the cause of the error?
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Sep 24, 2010
My domain [URL]... has recently been moved to a new server. Since then, I have not been able to download email. Email sent to the domain can be seen in /var/spool/mail/akwebsoft, just as on the previous server. However when I go to download the email, I get the following error message (in part) in my fetchmail logfile:
[code]...
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Jan 19, 2009
I have a server in the office and when I need to connect via cable I have to start up a root terminal and type in:
route add -net 0.0.0.0 gw 10.0.1.10 dev eth0
Is there a way to have this saved so I don't have to re-type it every time ? I already tried adding the command in /etc/rc.local and also in /etc/network/interfaces but it doesn't.
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Mar 11, 2010
How can I add this to Ubuntu so that I can effectively use both networks connected to my machine. All I do in WinXP is run this from the command prompt: route -p add 10.0.0.0 mask 255.0.0.0 10.15.122.9
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Apr 12, 2010
How would I go about re-routing the audio of a Jaunty PC, to another on the same LAN?
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May 11, 2010
I've succesfullly connected to my vpn with kvpnc, but none of my traffic is going through the vpn! I dont know how to route traffic to the vpn. for instance, when I go to whatsmyip.com it still has my previous ip.
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Aug 21, 2009
I use linux.
I have below error, no route to host.
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Dec 3, 2010
I'm using Fedora 9 and has finished the DHCP for my eth2 and static on eth0. I would like to add a route so that the 192.168.22.x eth0 and 192.168.26.x eth2 can communicate to each others,.
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Mar 16, 2011
What does it do? Any examples on how I use it?
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Apr 22, 2011
Ok so I just installed Ubuntu 10.10 Server Edition. On the very first boot, everything seems to run perfectly. I can SSH into it from any remote computer with no problems. However, the installation of certain things calls for a system reboot, which 2 days ago never would have been a problem. But now for some reason, the SSH server only wants to work on the very first boot of a clean install. After I reboot it, I get the ssh: connect to host 192.168.0.180 port 22: No route to host error. The absurd part is sshd is running! I've even tried restarting sshd, restarting the server, and using both 64 and 32 bit installs. The only way I can get anything to connect to it is by using ssh localhost. It won't even let me connect using the IP on the local machine!
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Mar 13, 2010
I've got an Ubuntu web server running 9.04 & Apache2. Ive got 2 NICs, one with an internal address for the LAN and one with and external address for the WAN to host the websites. My IP configuration is as follows (/etc/network/interfaces):
# The loopback network interface
auto lo eth0 eth1
iface lo inet loopback
# The primary network interface (WAN)
iface eth0 inet static
[Code]...
When i do a traceroute from a LAN PC and it makes it all the way to the router and then just stops. I'm probably missing something very simple, its been probably 10 years since i took a class in this.
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Apr 11, 2010
I have 3 computers on a local home network. Computer 1 is not receiving incoming anything from other computers on the network, and I don't know why. The regular internet works fine. Computer 1 can ping and ssh into either 2 or 3. 2 can ping and ssh into 3 and vice versa. But nothing can ping OR ssh into 1. Trying to do so says "no route to host". All computers are running Ubuntu Karmic. I don't even know where to start figuring out what's causing this, but it's probably something simple. I'm using the IPs I found listed in my wireless router's web-based control panel.
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Nov 19, 2010
I have a 10.04 install with 2 network cards. wlan0, and eth0. wlan0 is the internet connection. eth0 is the local network. I want to be able to have internet connection sharing between eth0 and wlan0. I have set everything up, using firestarter.
is there a way of testing the eth0->wlan0 routing from the machine itself? The routing table looks sound, but I would like a quick way of confirming it. Is there a tool, like PING or TRACEROUTE which will let me say "ping [URL] going through eth0" ?
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