[CUWiN-Dev] CUWiN routers tunnel "home" through NATs

[Bill Comisky]

On Wed, 20 Sep 2006, David Young wrote:

> On Wed, Sep 20, 2006 at 02:19:05PM -0500, Bill Comisky wrote:
>> On Tue, 19 Sep 2006, David Young wrote:
>>
>>> On Tue, Sep 19, 2006 at 05:32:46PM -0400, John Atkinson wrote:
>>>> Is this slated specifically for the Urbana network?
>>>
>>> All CUWiN routers will tunnel home.  I realize that may not be desirable
>>> on some networks.  If it is not desirable for your network, you can
>>> set utd=NO at the end of src/boot-image/extras/etc/rc.conf.d/utd before
>>> you build.
>>>
>>
>> Ahh...  I thought this was just on trunk and not in 0.7.0 but I notice now
>> that the 0.7.0 branch was copied over from trunk again around r4206.  I
>> was testing out quagga 0.99.5 vs. the 0.7.0 release branch and getting
>> some zebra log messages I couldn't make sense of, but these must be
>> related to the phoning home.  Sure enough utd is running:
>>
>> # ps auxw | grep utd
>> root    1997  0.0  2.6  64  836 ?      Ss    7:41AM 0:00.66 /usr/sbin/utd
>> 10.0.233.56 0.0.0.0 64.198.255.12 192.168.49.1
>>
>> I kept seeing routing entries like the one below appear and dissappear in
>> the routing table (with gre# index incremented) for the 192.168.49.x
>> subnet, which of course doesn't exist on my LAN.
>>
>> 192.168.49.1       192.168.49.249     UH          -   gre16
>>
>> BTW, the messages I was getting from zebra (with kernel and events
>> debugging on) are below.  Was the tunneling stuff ready to go as of r4206?
>> Or maybe it should be disabled by default on the 0.7.0 release?
>
> The tunneling is working quite well.  I think 0.7.0 was already released
> with it.

gotcha, hadn't seen the announcement.

> Creating/destroying tunnels does make Zebra awfully noisy, but I don't 
> think there is any harm in it.

cool, I thought it was trying to tunnel and failing based on seeing the 
"if_ioctl(SIOCGIFFLAGS) failed: Device not configured" and "Can't lookup 
mtu by ioctl(SIOCGIFMTU)" messages.

bill

--
Bill Comisky
bcomisky at pobox.com