Cannot connect with PPTP, wierd routing problem ?!
 

Hi I'm using a cable modem on Ubuntu 7.04.
After connecting with pon, it cannot ping and disconnects after a while.
root@zalame:/home/kfir# pon
root@zalame:/home/kfir# plog
Jun 10 23:24:40 zalame pppd[23517]: PAP authentication succeeded
Jun 10 23:24:43 zalame pppd[23517]: local IP address 80.230.74.114
Jun 10 23:24:43 zalame pppd[23517]: remote IP address 213.8.255.156
Jun 10 23:24:43 zalame pppd[23517]: primary DNS address 192.116.202.222
Jun 10 23:24:43 zalame pppd[23517]: secondary DNS address 213.8.172.83
root@zalame:/home/kfir# ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:17:8C:98:46
inet addr:172.29.184.221 Bcast:255.255.255.255 Mask:255.255.252.0
inet6 addr: fe80::216:17ff:fe8c:9846/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:415354 errors:0 dropped:0 overruns:0 frame:0
TX packets:155 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:123479145 (117.7 MiB) TX bytes:16232 (15.8 KiB)
Interrupt:20 Base address:0xec00

ppp0 Link encap:Point-to-Point Protocol
inet addr:80.230.74.114 P-t-P:213.8.255.156 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:5 errors:0 dropped:0 overruns:0 frame:0
TX packets:204897 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:74 (74.0 b) TX bytes:74456688 (71.0 MiB)

root@zalame:/home/kfir# ip route
213.8.15.194 via 172.29.184.1 dev eth0
213.8.255.156 dev ppp0 proto kernel scope link src 80.230.74.114
213.57.35.2 via 172.29.184.1 dev eth0
172.29.184.0/22 dev eth0 proto kernel scope link src 172.29.184.221
default via 213.8.255.156 dev ppp0

Can someone please help me ?