Timur Do: $ ifconfig which will report like below. All channels except "lo" should be closed with commands like: $ sudo ifconfig wlan0 down before doing a dialout, or the DNS for ppp0 will be misdirected to that for wlan0. You can compare: $ ping -c 1 209.85.171.83 PING 209.85.171.83 (209.85.171.83) 56(84) bytes of data. 64 bytes from 209.85.171.83: icmp_seq=1 ttl=249 time=104 ms with $ ping -c 1 gmail.com PING gmail.com (209.85.171.83) 56(84) bytes of data. 64 bytes from cg-in-f83.google.com (209.85.171.83): icmp_seq=1 ttl=249 time=106 ms If the first succeeds, while the 2nd fails, the problem is only DNS service. If the first fails, you do not have a CONNECT to the Internet. Marv S MarvS lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:6810 errors:0 dropped:0 overruns:0 frame:0 TX packets:6810 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:340500 (332.5 KB) TX bytes:340500 (332.5 KB) wlan0 Link encap:Ethernet HWaddr 00:13:d3:00:6e:91 inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::213:d3ff:fe00:6e91/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1990 errors:0 dropped:0 overruns:0 frame:0 TX packets:1407 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1813529 (1.7 MB) TX bytes:255837 (249.8 KB) wmaster0 Link encap:UNSPEC HWaddr 00-13-D3-00-6E-91-00-00-00-00-00-00-00-00-00-00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) On Sat, Jan 10, 2009 at 1:03 PM, Timur Irmatov <irmatov@xxxxxxxxx> wrote: > Hi, Bjorn. > > On Sat, Jan 10, 2009 at 9:19 PM, Bjorn Wielens <Uniacke1@xxxxxxxx> wrote: >> Hi, >> I read the message... >> Can you browse the internet normally? >> What exactly is it that you are pinging? >> BJorn. > > I just tried again, and got the same results. Answers to your > questions: no, I cannot browse internet normally. I ping the other > side of ppp connection (Access server at ISP). It's IP address is > first in traceroute output from modem connection, and also could be > learned from output of 'ip address ls ppp0' or 'ifconfig ppp0' - it is > peer ip address. > > Following are ping results I got this time. As you see, pings start > ok, then for 30 secs there seems to be no answer to pings but then > suddenly packets arrive, with big (and decreasing delays), then > everything repeats from the beginning. No packets are lost. It seems > as if some buffering is occuring inside of the drivers.. > > PING A.B.C.D (A.B.C.D) 56(84) bytes of data. > 64 bytes from A.B.C.D: icmp_seq=1 ttl=255 time=278 ms > 64 bytes from A.B.C.D: icmp_seq=2 ttl=255 time=136 ms > ... some lines removed... > 64 bytes from A.B.C.D: icmp_seq=32 ttl=255 time=140 ms > 64 bytes from A.B.C.D: icmp_seq=33 ttl=255 time=126 ms > > 64 bytes from A.B.C.D: icmp_seq=34 ttl=255 time=31511 ms > 64 bytes from A.B.C.D: icmp_seq=35 ttl=255 time=30512 ms > 64 bytes from A.B.C.D: icmp_seq=36 ttl=255 time=29540 ms > 64 bytes from A.B.C.D: icmp_seq=37 ttl=255 time=28540 ms > ... some lines removed... > 64 bytes from A.B.C.D: icmp_seq=70 ttl=255 time=2875 ms > 64 bytes from A.B.C.D: icmp_seq=71 ttl=255 time=1875 ms > 64 bytes from A.B.C.D: icmp_seq=72 ttl=255 time=875 ms > 64 bytes from A.B.C.D: icmp_seq=73 ttl=255 time=128 ms > > 64 bytes from A.B.C.D: icmp_seq=74 ttl=255 time=38520 ms > 64 bytes from A.B.C.D: icmp_seq=75 ttl=255 time=37531 ms > 64 bytes from A.B.C.D: icmp_seq=76 ttl=255 time=36531 ms > ...some lines removed... > 64 bytes from A.B.C.D: icmp_seq=112 ttl=255 time=1283 ms > 64 bytes from A.B.C.D: icmp_seq=113 ttl=255 time=279 ms > 64 bytes from A.B.C.D: icmp_seq=114 ttl=255 time=180 ms > 64 bytes from A.B.C.D: icmp_seq=115 ttl=255 time=132 ms > > > -- > Timur Irmatov, xmpp:irmatov@xxxxxxxxx >