Thanks for the kernel links. I downloaded and installed a kernel = 2.6.38-8. Well, that eliminated the possibility of it being the kernel, because the symptoms were unchanged.
Then I looked at more pages about pppd and dialing. According to one trouble shooting guide, which seemed to be very old:
>begin
8.3 pppd message: not replacing existing default route via x.x.x.x
You configured pppd to create a default route to your new PPP link, which is good. However, pppd does _not_ replace an existing route. To avoid this problem remove the default route before you start pppd. The command to remove the default gateway is
route del default
<end
So I looked at the info you get typing
route
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default ma78-ub18 0.0.0.0 UG 100 0 0 eth0
link-local * 255.255.0.0 U 1000 0 0 eth0
localnet * 255.255.255.0 U 0 0 0 eth0
and yes there was a "default" listed. So I deleted it as instructed. BING! Now stuff comes and goes to the modem. It works with the 2.6.38 kernel and the current 3.0.0 as well.
I checked a virtual Ubuntu install done with VirtualBox, and it ends up with a "default". So this is the standard way Ubuntu gets installed.
I checked one old version of Ubuntu and it does NOT have a "default." So that explains how this new problem has started. That also means it is possible to not have a default.
The "default" comes back after rebooting. I have not been able to find where this "default" route is set, and I have looked inside a lot of the files in /etc for hours and hours.
There is no doubt a simple way to do this search from a command line, but I don't know it. How about giving me the command?
ppp-gnome still must be started with sudo, unlike with Natty. gpppon still does not work. So there is still some kind of odd problem. pon works.
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