Cricket Modem

["Leslie Rhorer" <lrhorer@xxxxxxxxxxx>]

List members,

	I have purchased Cricket Wireless service and have an A600 modem
from them.  I am attempting to set up a 3G wireless router with this system
using Debian "Lenny" Linux on a Dell Optiplex GX-260 PC.  I'm using
usb_modeswitch-0.9.7 to "plip-flop" the modem out of storage mode and into
modem mode, and I am using wvdial to initiate calling and set up the PPP
session. I am using ipmasq to set up the firewall for forwarding from eth0
to ppp0 and dnsmasq to set up a DNS proxy and DHCP server.  I run the script
which does all this as the last call from the Runlevel 2 startup.

	So far, it's working pretty well, but I have two issues.  If the
call is interrupted for whatever reason during the session, I cannot get the
session re-established.  The modem dials out and establishes a link, but it
never creates the ppp0 interface again.  The software creates the PID file
and then just seems to stop.  It still reacts to a HUP signal, so it isn't
hung up entirely, but it doesn't re-establish the networking, either.  Of
course, when  the session is interrupted, I want to re-establish the
internet connectivity automatically.  Since this is a dedicated router, I
could of course simply reboot the system, but that's a rather ham-handed
approach, not to mention the fact it takes the PC a while to boot, so the
internet service will tend to be down for at least a couple of minutes
taking this approach.

	The second issue, which may be related, is that I am unable to take
down the router configuration and re-establish the default configuration
with eth0 obtaining the IP address and DNS information from a DNS server on
the LAN.  I can manually turn up the port and set a static IP, but I can't
get it to automatically configure.  Admittedly, this is only an issue for
the time being, while I am setting up the system.  Once it is set up and in
place, there will no longer be a DHCP server or internet access on the LAN
to which it is attached, but right now it is a pain having to disable the
startup script and reboot in order to administrate the system from my LAN.

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