I have a Compaq iPaq with Linux installed on it (see http://opie.handhelds.org/), and it is connected to my Gentoo Linux box with USB ethernet. The Gentoo box is connected to an Ovislink router (with a DHCP server) via regular ethernet. I want the hanheld to be able to talk to the net via the Gentoo box. I have not been able to get IP masquerading to work under Gentoo. I would prefer to have the handheld get its IP address from the router (and have the Gentoo box just forward the packets). Does anyone know how to get this working? Here is some info about my situation:
# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:20:ED:B8:91:55 inet addr:192.168.1.1 Bcast:255.255.255.255 Mask:255.255.255.0 UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3340 errors:0 dropped:0 overruns:0 frame:0 TX packets:3557 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3330687 (3.1 Mb) TX bytes:448922 (438.4 Kb) Interrupt:11
# ifconfig usb0 usb0 Link encap:Ethernet HWaddr 4E:DC:69:01:CA:EF inet addr:192.168.1.200 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:25 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:980 (980.0 b) TX bytes:574 (574.0 b)
# iptables -t nat -I POSTROUTING -j MASQUERAQDE -s 192.168.1.3/16 iptables v1.2.8: Couldn't load target `MASQUERAQDE':/lib/iptables/libipt_MASQUERAQDE.so: cannot open shared object file: No such file or directory
# uname -a Linux proton 2.4.23-ck1 #1 Thu Dec 4 19:21:52 CST 2003 i686 AMD Athlon(tm) XP 1800+ AuthenticAMD GNU/Linux
This is how I bring up the network to the PDA: modprobe uhci sleep 1 insmod usbnet ifconfig usb0 192.168.1.200 netmask 255.255.255.0 pointopoint 192.168.1.3 up route add -host 192.168.1.3 usb0
If anyone is interested in the really gritty details, I have attached the config file for my kernel.
Does anyone know what I need to do? Thanks.
-Brian
dhcp-relay will forward dhcp requests between subnets but you do not have multiple subnets defined.
I am missing something in how the iPaq is connected. Is it connected by an Ethernet cable to the USB adaptor?
It would seem to me that you have to have 2 subnets.
If you defined the netmask as 255.255.255.128 then eth0 and usb0 would be on different subnets. I am assuming the router would have an address in the 192.168.1.2-127 range.
Brian Doob wrote:
I have a Compaq iPaq with Linux installed on it (see http://opie.handhelds.org/), and it is connected to my Gentoo Linux box with USB ethernet. The Gentoo box is connected to an Ovislink router (with a DHCP server) via regular ethernet. I want the hanheld to be able to talk to the net via the Gentoo box. I have not been able to get IP masquerading to work under Gentoo. I would prefer to have the handheld get its IP address from the router (and have the Gentoo box just forward the packets). Does anyone know how to get this working? Here is some info about my situation:
# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:20:ED:B8:91:55 inet addr:192.168.1.1 Bcast:255.255.255.255 Mask:255.255.255.0 UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3340 errors:0 dropped:0 overruns:0 frame:0 TX packets:3557 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3330687 (3.1 Mb) TX bytes:448922 (438.4 Kb) Interrupt:11
# ifconfig usb0 usb0 Link encap:Ethernet HWaddr 4E:DC:69:01:CA:EF inet addr:192.168.1.200 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:25 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:980 (980.0 b) TX bytes:574 (574.0 b)
# iptables -t nat -I POSTROUTING -j MASQUERAQDE -s 192.168.1.3/16 iptables v1.2.8: Couldn't load target `MASQUERAQDE':/lib/iptables/libipt_MASQUERAQDE.so: cannot open shared object file: No such file or directory
# uname -a Linux proton 2.4.23-ck1 #1 Thu Dec 4 19:21:52 CST 2003 i686 AMD Athlon(tm) XP 1800+ AuthenticAMD GNU/Linux
This is how I bring up the network to the PDA: modprobe uhci sleep 1 insmod usbnet ifconfig usb0 192.168.1.200 netmask 255.255.255.0 pointopoint 192.168.1.3 up route add -host 192.168.1.3 usb0
If anyone is interested in the really gritty details, I have attached the config file for my kernel.
Does anyone know what I need to do? Thanks.
-Brian
Brian,
Sorry I missed your comments on setting up the usb point. Since it is defined as a point to point you do not need multiple subnets and NAT is not necessary.
For point-to-point I usually define the local address to be the same as eth0. That is with pppd but I think it would apply here as well.
Apologies for missing the obvious, Bill
Bill Reid wrote:
dhcp-relay will forward dhcp requests between subnets but you do not have multiple subnets defined.
I am missing something in how the iPaq is connected. Is it connected by an Ethernet cable to the USB adaptor?
It would seem to me that you have to have 2 subnets.
If you defined the netmask as 255.255.255.128 then eth0 and usb0 would be on different subnets. I am assuming the router would have an address in the 192.168.1.2-127 range.
Brian Doob wrote:
I have a Compaq iPaq with Linux installed on it (seehttp://opie.handhelds.org/), and it is connected to my Gentoo Linux box with USB ethernet. The Gentoo box is connected to an Ovislink router (with a DHCP server) via regular ethernet. I want the hanheld to be able to talk to the net via the Gentoo box. I have not been able to get IP masquerading to work under Gentoo. I would prefer to have the handheld get its IP address from the router (and have the Gentoo box just forward the packets). Does anyone know how to get this working? Here is some info about my situation:
# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:20:ED:B8:91:55 inet addr:192.168.1.1 Bcast:255.255.255.255 Mask:255.255.255.0 UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3340 errors:0 dropped:0 overruns:0 frame:0 TX packets:3557 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3330687 (3.1 Mb) TX bytes:448922 (438.4 Kb) Interrupt:11 # ifconfig usb0 usb0 Link encap:Ethernet HWaddr 4E:DC:69:01:CA:EF inet addr:192.168.1.200 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:25 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:980 (980.0 b) TX bytes:574 (574.0 b)
# iptables -t nat -I POSTROUTING -j MASQUERAQDE -s 192.168.1.3/16 iptables v1.2.8: Couldn't load target `MASQUERAQDE':/lib/iptables/libipt_MASQUERAQDE.so: cannot open shared object file: No such file or directory
# uname -a Linux proton 2.4.23-ck1 #1 Thu Dec 4 19:21:52 CST 2003 i686 AMD Athlon(tm) XP 1800+ AuthenticAMD GNU/Linux
This is how I bring up the network to the PDA: modprobe uhci sleep 1 insmod usbnet ifconfig usb0 192.168.1.200 netmask 255.255.255.0 pointopoint 192.168.1.3 up route add -host 192.168.1.3 usb0
If anyone is interested in the really gritty details, I have attached the config file for my kernel.
Does anyone know what I need to do? Thanks.
-Brian
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Brian Doob