Subject: Failure with MOL networking and ethertap
From: Renaud Dreyer (rdreyer@math.berkeley.edu)
Date: Mon Mar 06 2000 - 03:54:18 MST
I've been trying to get MOL networking up and running with the
ethertap method in the FAQ without any success.
I'm running Linux on a PowerMac 7300 with a Cable Modem and a static
IP address. I'm running the latest MOL (0.9.41). I have a kernel (2.2.1
5pre11 from Paul's tree) with IP masquerading and ethertap compiled
in. I'm completely stumped and would like to know how other people go
this working!
I followed the FAQ to the letter and nothing is working. This is what
I did:
*Created ethertap device:
cd /dev; /bin/mknod tap0 c 36 16
*Configured it:
insmod ethertap
ifconfig tap0 192.168.0.1 netmask 255.255.255.0 up arp
route add -host 192.168.0.1 tap0
echo "1" > /proc/sys/net/ipv4/conf/tap0/proxy_arp
arp -s 192.168.0.2 FE:FD:00:00:00:00 pub
*Got IP masquerading going:
echo "1" >/proc/sys/net/ipv4/ip_forward
ipchains -M -S 7200 10 160
ipchains -P forward DENY
ipchains -A forward -s 192.168.0.0/24 -j MASQ
*Set up networking in /etc/molrc:
disable_osi_enet: no
enet_interface: tap0
*Entered the following in Mac OS' TCP/IP control panel:
Connect via : Ethernet
Configure : Manually
IP address : 192.168.0.2
Subnet mask : 255.255.255.0
Router address : 192.168.0.1
Name server addr: __ISP's_name_server_addr__ (same as under Linux)
The problem is that I can't even ping the linux side (192.168.0.1)
from the Mac OS side (192.168.0.2) or vice-versa, so I know it's not
an IP masquerading problem, since the "machines" on the internal
network should at least be able to see each other.
I have the following modules loaded:
Module Size Used by
ethertap 3216 1
sheep_net 4032 0
mol 31592 0
This is what ifconfig gives me:
eth0 Link encap:Ethernet HWaddr 00:05:02:D6:6A:5E
inet addr:24.6.255.22 Bcast:24.6.255.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11734 errors:0 dropped:0 overruns:0 frame:0
TX packets:10066 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:14 Base address:0x1000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:11470 errors:0 dropped:0 overruns:0 frame:0
TX packets:11470 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
tap0 Link encap:Ethernet HWaddr FE:FD:00:00:00:00
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:891 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
Interrupt:5
... and netstat -rn:
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.0.1 0.0.0.0 255.255.255.255 UH 0 0 0 tap0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 tap0
24.6.255.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 24.6.255.1 0.0.0.0 UG 0 0 0 eth0
Thanks for any help,
Renaud
This archive was generated by hypermail 2a24 : Sun Apr 02 2000 - 21:06:29 MDT