On Tue, 18 Feb 2003 01:42:49 -0800 (PST) Ron Bouwhuis <[EMAIL PROTECTED]> wrote:
> All, > > Using MDK 9.0 and trying to get internet connection > going through an ADSL USB modem. Using eciadsl > package and seems to work OK - to a point. Something > very screwy is happening. I can ping, but only sort > of. > > For example, I seem to be ablt to ping to xx.yy.zz.aa > type addresses, though sometimes get . However, with > written addresses, it SOMETIMES works, but often not. > Here's an example: > > [root@Auckland etc]# ping www.rosenet.ne.jp > ping: unknown host www.rosenet.ne.jp > [root@Auckland etc]# ping www.rosenet.ne.jp > PING catv01.rosenet.ne.jp (210.230.70.2) from > 203.173.243.231 : 56(84) bytes of data. > 64 bytes from catv01.rosenet.ne.jp (210.230.70.2): > icmp_seq=1 ttl=239 time=266 ms > 64 bytes from catv01.rosenet.ne.jp (210.230.70.2): > icmp_seq=2 ttl=239 time=260 ms > 64 bytes from catv01.rosenet.ne.jp (210.230.70.2): > icmp_seq=3 ttl=239 time=259 ms > 64 bytes from catv01.rosenet.ne.jp (210.230.70.2): > icmp_seq=4 ttl=239 time=259 ms > 64 bytes from catv01.rosenet.ne.jp (210.230.70.2): > icmp_seq=5 ttl=239 time=259 ms > > --- catv01.rosenet.ne.jp ping statistics --- > 5 packets transmitted, 5 received, 0% loss, time > 5056ms > rtt min/avg/max/mdev = 259.161/260.746/266.239/2.511 > ms > > You can see the first two times I got unknown host, > but the third time it worked. Nothing was done > between attempts other than up arrow and enter in > bash! All three attempts within 1 minute. Why work > the third time??? > > Here's the contents of host.conf and resolv.conf: > > [root@Auckland etc]# cat host.conf > order hosts,bind > multi on > [root@Auckland etc]# cat resolv.conf > # ppp temp entry > nameserver 203.109.252.42 # ppp temp entry > nameserver 203.109.252.43 # ppp temp entry > > I don't know if they are right, but I do know that the > entries in resolv.conf are the DNS servers supplied by > my ISP through DHCP. > > My route table looked odd at first, until I figured > that the hyphenated IP address was probably just the > name. Here are two views of the route table that show > what I mean: > > > [root@Auckland etc]# route -e > Kernel IP routing table > Destination Gateway Genmask Flags > MSS Window irtt Iface > 203-173-243-254 * 255.255.255.255 UH > 40 0 0 ppp0 > 192.168.0.0 * 255.255.255.0 U > 40 0 0 eth0 > 127.0.0.0 * 255.0.0.0 U > 40 0 0 lo > default 203-173-243-254 0.0.0.0 UG > 40 0 0 ppp0 > [root@Auckland etc]# route -n > Kernel IP routing table > Destination Gateway Genmask Flags > Metric Ref Use Iface > 203.173.243.254 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 > 0.0.0.0 203.173.243.254 0.0.0.0 UG > 0 0 0 ppp0 > > Not sure what the UH and UG flags mean. Actually, > don't know much about routing at all, so if anything > looks odd, please tell me. > > Finally, here's the output from ifconfig. Not sure if > the 255.255.255.255 netmask is correct for ppp0, but > that's what set up by DHCP from the ISP. It's the > same in Windows that that seems to work OK. > > [root@Auckland etc]# ifconfig > eth0 Link encap:Ethernet HWaddr > 00:90:CC:12:D2:64 > inet addr:192.168.0.2 Bcast:192.168.0.255 > Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 > Metric:1 > RX packets:32926 errors:0 dropped:0 > overruns:0 frame:0 > TX packets:38633 errors:0 dropped:0 > overruns:0 carrier:0 > collisions:29 txqueuelen:100 > RX bytes:16790046 (16.0 Mb) TX > bytes:6766294 (6.4 Mb) > Interrupt:3 Base address:0x300 > > 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:5910 errors:0 dropped:0 > overruns:0 frame:0 > TX packets:5910 errors:0 dropped:0 > overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:1949959 (1.8 Mb) TX bytes:1949959 > (1.8 Mb) > > ppp0 Link encap:Point-to-Point Protocol > inet addr:203.173.243.231 > P-t-P:203.173.243.254 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:3 errors:0 dropped:0 overruns:0 > carrier:0 > collisions:0 txqueuelen:3 > RX bytes:54 (54.0 b) TX bytes:54 (54.0 b) > > > Please help - this is driving me crazy and I can't > figure out why ping and DNS lookup SOMETIMES work. Of > course, from a web browser I can't connect to anything > at all - just get a host timeout error. I've been > forced to use W2K as my internet connection sharing > box - and I'm convinced I've already been subject to > attack from the big bad web the very first day!!! > > Regards and sorry for the long post, > Ron. Suspect DNS problems... Try: dig @203.109.252.42 www.rosenet.ne.jp dig @203.109.252.43 www.rosenet.ne.jp which currently return: ;; ANSWER SECTION: www.rosenet.ne.jp. 86400 IN CNAME catv01.rosenet.ne.jp. catv01.rosenet.ne.jp. 65992 IN A 210.230.70.2 when you are experiencing the problem... everything else seems OK; though the PPP stats (RX bytes:54 (54.0 b) TX bytes:54 (54.0 b)) are indicative that very little has gone over the link so far (just established?), and TX==RX _might_ be suspicious (possible loopback; though highly unusual/unlikely) if one was grasping at straws -- although, suspect that if the counters climb yet remain identical. Pierre
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