i don't know how to configure net conection with pppoe

after adsl-setup

I have something like this in /var/log/syslog
Code:
Jan 10 15:38:40 hcl pppd[2864]: invalid numeric parameter 'yes' for idle option

Jan 10 15:10:01 hcl pppd[19487]: not replacing existing default route to eth0 [192.168.1.1]
Jan 10 15:10:01 hcl pppd[19487]: Cannot determine ethernet address for proxy ARP


Jan 10 12:51:39 hcl pppd[2610]: not replacing existing default route to eth0 [192.168.1.1]
Jan 10 12:51:39 hcl pppd[2610]: Cannot determine ethernet address for proxy ARP
Jan 10 13:01:51 hcl pppoe[2612]: read (asyncReadFromPPP): Session 2877: Input/output error
Jan 10 13:02:10 hcl pppd[2810]: not replacing existing default route to eth0 [192.168.1.1]
Jan 10 13:02:10 hcl pppd[2810]: Cannot determine ethernet address for proxy ARP
and

Code:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
loopback        *               255.0.0.0       U     0      0        0 lo
default         hcl.hcl.o       0.0.0.0         UG    1      0        0 eth0

could you explain me what's wrong and how to fix it

Thanks.