I have the same problem with tsampouk.
I am using a usb ISDN modem (not a card). I am using acm driver (the device is /dev/ttyACM0) and one B-channel (64kbs).
I beleive though, that it is not a modem/ISDN related problem.
The problem is, when I dial up with kppp, everything is OK (modem init-> dialing->auth->ip address), but after I am online, i get no responce from the rest of the world. By that I mean that pinging my localnet, localhost, and ip address assigned from my ISP, I get responce. On the other hand pinging my ISP's gateway and beyond (every other ip OR hostname) i get no responce.
It doesn't seem to be a resolving problem (I tested hostnames AND ip-addresses) and my /etc/resolv.conf seems to be OK.
My routing seems to be table is OK too.
Here are some outputs:
ifconfig:
Code:
eth0 Link encap:Ethernet HWaddr 00:04:75:B6:10:52
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:165 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:21288 (20.7 Kb) TX bytes:699 (699.0 b)
Interrupt:10 Base address:0xe800
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:174 errors:0 dropped:0 overruns:0 frame:0
TX packets:174 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:18214 (17.7 Kb) TX bytes:18214 (17.7 Kb)
ppp0 Link encap:Point-to-Point Protocol
inet addr:80.76.41.92 P-t-P:80.76.41.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:66 (66.0 b) TX bytes:87 (87.0 b)
route -n
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
80.76.41.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 80.76.41.1 0.0.0.0 UG 0 0 0 ppp0
cat /etc/resolv.conf
Code:
nameserver 80.76.39.10 #kppp temp entry
nameserver 80.76.33.227 #kppp temp entry
tail -f /var/log/messages
Code:
Jul 21 14:14:18 izgar pppd[4816]: pppd 2.4.2 started by root, uid 0
Jul 21 14:14:18 izgar pppd[4816]: Using interface ppp0
Jul 21 14:14:18 izgar pppd[4816]: Connect: ppp0 <--> /dev/ttyACM0
Jul 21 14:14:20 izgar pppd[4816]: CHAP authentication succeeded
Jul 21 14:14:20 izgar pppd[4816]: local IP address 80.76.41.92
Jul 21 14:14:20 izgar pppd[4816]: remote IP address 80.76.41.1
Jul 21 14:14:20 izgar pppd[4816]: primary DNS address 80.76.39.10
Jul 21 14:14:20 izgar pppd[4816]: secondary DNS address 80.76.33.227
Jul 21 14:21:04 izgar pppd[4816]: Terminating on signal 15.
Jul 21 14:21:04 izgar pppd[4816]: Connection terminated.
Jul 21 14:21:04 izgar pppd[4816]: Connect time 6.8 minutes.
Jul 21 14:21:04 izgar pppd[4816]: Sent 2648 bytes, received 114 bytes.
Jul 21 14:21:04 izgar pppd[4816]: Connect time 6.8 minutes.
Jul 21 14:21:04 izgar pppd[4816]: Sent 2648 bytes, received 114 bytes.
Jul 21 14:21:04 izgar pppd[4816]: Exit.
I had emptied /etc/ppp/options before dialing with kppp (in case there is an option-conflict).
The strange thing is that if I setup ppp with pppsetup and use ppp-go and ppp-off scripts to dial-up everything works fine (though pinging only my ISP's gateway doesn't work). I can access web pages, ssh etc.
Why using kppp nothing responds? Had anyone the same problem and managed to solve it? If so please tell us what you did.
I am using slack 10, with a custom-compiled 2.6.7 kernel. Furthermore, I am not running any iptables firewall service.
Before installing Slackware 10 I had version 9.0 with kernel 2.6.4 and there were no such problems.