Subject: Help with dns resolution
From: Dr. Alfonso F. Agnew (aagnew@mail.smu.edu)
Date: Sun Jan 21 2001 - 08:56:06 MST
Network Gurus,
I have my dialup ppp connection working, but dns resolution is not
working. I can connect and ping an ip address, but not a url. Here's
is a transcript of a troubleshooting session. During my installation, I
chose not to install bind, but just the caching nameserver rpm, since I
use remote dns's (see my resolve.conf below). Installing bind later did
not help. If helpful I could include a `ps -lA' for further trouble
shooting help.
Please help! Thanks!
Alfonso
P.S. I have done my homework on ppp,dns,route, via` man (topic)',
reading "Running Linux", and more. I still can't see what's wrong, so
I'm still missing something....
*************************************
[root@localhost /root]# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
ppp0 Link encap:Point-to-Point Protocol
inet addr:129.119.251.31 P-t-P:129.119.251.5
Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:15 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
**************************************************
[root@localhost /root]# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
129.119.251.5 0.0.0.0 255.255.255.255 UH 0 0 0
ppp0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0
lo
0.0.0.0 129.119.251.5 0.0.0.0 UG 0 0 0
ppp0
**************************************************
[root@localhost /root]# cat /etc/resolv.conf
domain smu.edu #kppp temp entry
nameserver 129.116.64.10 #kppp temp entry
nameserver 129.116.64.8 #kppp temp entry
nameserver 129.116.3.2 #kppp temp entry
**************************************************
[root@localhost /root]# ping 129.119.251.5
PING 129.119.251.5 (129.119.251.5) from 129.119.251.31 : 56(84) bytes of
data.
64 bytes from 129.119.251.5: icmp_seq=0 ttl=255 time=1247.0 ms
64 bytes from 129.119.251.5: icmp_seq=1 ttl=255 time=250.7 ms
64 bytes from 129.119.251.5: icmp_seq=2 ttl=255 time=170.0 ms
64 bytes from 129.119.251.5: icmp_seq=3 ttl=255 time=130.0 ms
--- 129.119.251.5 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 130.0/449.4/1247.0 ms
***************************************************
[root@localhost /root]# ping mail.smu.edu
ping: unknown host mail.smu.edu
attached mail follows:
I have my dialup ppp connection working, but dns resolution is not
working. I can connect and ping an ip address, but not a url. Here's
is a transcript of a troubleshooting session. Please help! Thanks,
Alfonso
[root@localhost /root]# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
ppp0 Link encap:Point-to-Point Protocol
inet addr:129.119.251.31 P-t-P:129.119.251.5
Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:15 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
**************************************************
[root@localhost /root]# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
129.119.251.5 0.0.0.0 255.255.255.255 UH 0 0 0
ppp0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0
lo
0.0.0.0 129.119.251.5 0.0.0.0 UG 0 0 0
ppp0
**************************************************
[root@localhost /root]# cat /etc/resolv.conf
domain smu.edu #kppp temp entry
nameserver 129.116.64.10 #kppp temp entry
nameserver 129.116.64.8 #kppp temp entry
nameserver 129.116.3.2 #kppp temp entry
**************************************************
[root@localhost /root]# ping 129.119.251.5
PING 129.119.251.5 (129.119.251.5) from 129.119.251.31 : 56(84) bytes of
data.
64 bytes from 129.119.251.5: icmp_seq=0 ttl=255 time=1247.0 ms
64 bytes from 129.119.251.5: icmp_seq=1 ttl=255 time=250.7 ms
64 bytes from 129.119.251.5: icmp_seq=2 ttl=255 time=170.0 ms
64 bytes from 129.119.251.5: icmp_seq=3 ttl=255 time=130.0 ms
--- 129.119.251.5 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 130.0/449.4/1247.0 ms
***************************************************
[root@localhost /root]# ping mail.smu.edu
ping: unknown host mail.smu.edu
This archive was generated by hypermail 2a24 : Sun Jan 21 2001 - 08:55:05 MST