Strange behaviour of pppd in OpenBSD with an ADSL connection

["Sebastian Wain" <sebastian_wain_(_at_)_hotmail_(_dot_)_com>]

I have an ADSL connection (Alcatel Speed Touch Home) , my firewall is an 
OpenBSD 2.8 (sparc) doing NAT (using pptp to use the ADSL modem) and I have 
three machines behind the firewall (Linux/Windows)
My connection is running perfectly (http/ftp/streaming and so on...) until I 
try to attach a file in a webmail (I tested it on Yahoo and Hotmail), when I 
try to attach a file my pppd reconnect many times producing a log like this:

May 21 23:23:55 shankar pppd[30857]: local  IP address 200.51.209.180
May 21 23:23:55 shankar pppd[30857]: remote IP address 192.168.93.74
May 21 23:25:03 shankar pppd[30857]: local  IP address 200.51.209.180
May 21 23:25:03 shankar pppd[30857]: remote IP address 192.168.93.74
May 21 23:26:35 shankar pppd[30857]: local  IP address 200.51.233.48
May 21 23:26:35 shankar pppd[30857]: remote IP address 192.168.93.76
May 21 23:27:54 shankar pppd[30857]: local  IP address 200.51.233.48
May 21 23:27:54 shankar pppd[30857]: remote IP address 192.168.93.76
May 21 23:30:25 shankar pppd[30857]: local  IP address 200.51.208.87
May 21 23:30:25 shankar pppd[30857]: remote IP address 192.168.93.74
May 21 23:30:25 shankar last message repeated 9 times
May 21 23:34:05 shankar pppd[30857]: local  IP address 200.51.208.87
May 21 23:34:05 shankar pppd[30857]: remote IP address 192.168.93.74
May 21 23:34:05 shankar last message repeated 2 times
May 21 23:53:06 shankar pppd[30857]: local  IP address 200.51.232.226
May 21 23:53:06 shankar pppd[30857]: remote IP address 192.168.93.76
May 21 23:53:06 shankar last message repeated 2 times
May 21 23:54:28 shankar pppd[30857]: local  IP address 200.51.232.226
May 21 23:54:28 shankar pppd[30857]: remote IP address 192.168.93.76
May 21 23:59:20 shankar pppd[30857]: local  IP address 200.51.208.87
May 21 23:59:20 shankar pppd[30857]: remote IP address 192.168.93.74


I don't know what's the correlation between attach a file using http (and 
POSTing it) and the pppd behaviour.


Any help is Welcomed

Sebastian Wain


pd: Obviously, Finally I can't attach any file because I am loosing my 
connection everytime.





_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.