Establishing a Mesh Portal

It's not entirely automatic quite yet; we'll get a more automatic solution in place soon.

Requirements

• http://www.cozybit.com/projects/mpp-utils/mpp-utils.tar.gz
• A USB ethernet adapter

What to do

• Un-gzip and un-tar that somewhere on your mesh portal machine

• in masquerade.sh from the mpp-utils, change EXTIF to your USB wired interface

• In masquerade.sh, make the following changes (in patch-style form):

    # This line results in iptables: Unknown error 4294967295
-    #$IPTABLES -A FORWARD -i $EXTIF -o $INTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
+    $IPTABLES -A FORWARD -i $EXTIF -o $INTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
    $IPTABLES -A FORWARD -i $EXTIF -o $INTIF  -j ACCEPT
    $IPTABLES -A FORWARD -i $INTIF -o $EXTIF -j ACCEPT
-    $IPTABLES -A FORWARD -j LOG
+    #$IPTABLES -A FORWARD -j LOG

• Stop NetworkManager and the 'network' scripts

chkconfig --level 2345 NetworkManager stop
chkconfig --level 2345 network stop
chkconfig --level 2345 dhcdbd stop

• reboot

• Create an ifcfg file for your wired interface. If your wired interface is eth1:

Create /etc/sysconfig/network-scripts/ifcfg-eth1, which should contain:

DEVICE=eth1
ONBOOT=no
BOOTPROTO=dhcp

• Start the wired interface

ifup eth1

• Configure the mesh interface

iwconfig msh0 mode ad-hoc channel 11 essid "olpc-mesh"

• Assign the address to the mesh interface

ifconfig msh0 169.254.1.1 up

• Delete the 169.254/16 route on the wired interface

ip route del 169.254.0.0/16 dev eth1

• run the mpp.py script

python mpp.py

and it should all work