Re: Can't ping
I can't ping nodes outside my subnet. I can reach the internet by hopping via
another machine on the subnet, which makes it possible to write this e-mail.
Is there a config file I should check carefully? Things broke when I upgraded my
Debian Sid in late July, with the previous successful upgrade in late June.
My /etc/resolv.conf, which works OK on other nodes:
search rnd.ki.sw.ericsson.se
nameserver 147.214.214.11
nameserver 147.214.214.111
These nameservers are inside the company firewall, and I don't think they can
be pinged from the outside.
Response from `route -n` on my trouble machine (Debian Sid, IP=147.214.195.137):
localhost:/mnt/hda9/helge# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.2 0.0.0.0 255.255.255.255 UH 0 0 0 sl0
147.214.195.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 sl0
0.0.0.0 147.214.195.1 0.0.0.0 UG 0 0 0 eth0
Response from `route -n` on another machine (namely 147.214.195.149, which I *can*
ping from my troubled machine. This one runs RedHat.):
12:51 /home/erahege> route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
147.214.195.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 147.214.195.1 0.0.0.0 UG 0 0 0 eth0
Response from ifconfig eth0 on my troubled machine:
localhost:/mnt/hda9/helge# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:02:3F:66:01:C2
inet addr:147.214.195.137 Bcast:147.214.195.255 Mask:255.255.255.0
inet6 addr: fe80::202:3fff:fe66:1c2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:37029 errors:0 dropped:0 overruns:0 frame:0
TX packets:36707 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:10404342 (9.9 MiB) TX bytes:5476083 (5.2 MiB)
Interrupt:10 Base address:0x2000
michael <linux@networkingnewsletter.org.uk> asks:
what is the output from `traceroute www.google.com`?
Response from `traceroute www.google.com` on my working machine:
12:56 /home/erahege> traceroute www.google.com
traceroute: Warning: www.google.com has multiple addresses; using 66.249.93.99
traceroute to www.l.google.com (66.249.93.99), 30 hops max, 38 byte packets
1 147.214.195.253 (147.214.195.253) 0.249 ms 0.205 ms 0.200 ms
2 seki12core1-ki81.sw.ericsson.se (147.214.0.194) 0.560 ms 0.260 ms 0.230 ms
3 seal08dcore1-ki12.sw.ericsson.se (192.168.238.13) 0.630 ms 0.537 ms 0.531 ms
4 192.168.240.49 (192.168.240.49) 0.634 ms 0.585 ms 0.589 ms
5 internet-gw.sw.ericsson.se (192.16.151.10) 0.827 ms 1.070 ms 0.839 ms
6 sealww01-101.ericsson.net (194.237.142.30) 1.335 ms 1.377 ms 1.757 ms
7 telia-se-al.ericsson.net (193.180.17.234) 1.858 ms 1.583 ms 1.326 ms
8 213.64.82.161 (213.64.82.161) 1.388 ms 1.406 ms 1.412 ms
9 hy-c2-link.se.telia.net (81.228.72.116) 1.648 ms 1.581 ms 1.735 ms
10 hy-c1-link.se.telia.net (81.228.72.214) 1.619 ms 1.692 ms 1.419 ms
11 hy-peer1-link.se.telia.net (81.228.72.71) 1.771 ms 1.865 ms 1.841 ms
12 s-b4-pos14-0.telia.net (213.248.101.142) 1.711 ms 1.710 ms 1.528 ms
13 s-bb2-pos7-2-0.telia.net (213.248.66.13) 1.865 ms 1.708 ms 1.548 ms
14 hbg-bb2-pos4-0-0.telia.net (213.248.64.38) 13.977 ms * 14.288 ms
15 hbg-b2-link.telia.net (80.91.249.201) 18.683 ms 18.559 ms 14.246 ms
16 google-110073-hbg-b2.c.telia.net (213.248.96.102) 18.795 ms 14.290 ms 14.026 ms
17 66.249.95.133 (66.249.95.133) 54.694 ms 25.927 ms 21.064 ms
18 72.14.233.77 (72.14.233.77) 29.409 ms 20.860 ms 72.14.233.79 (72.14.233.79) 20.867 ms
19 66.249.94.46 (66.249.94.46) 32.171 ms 66.249.94.54 (66.249.94.54) 21.897 ms 21.001 ms
20 66.249.93.99 (66.249.93.99) 21.255 ms 25.962 ms 21.976 ms
Response from `traceroute www.google.com` on my troubled machine:
traceroute: unknown host www.google.com
Response from `traceroute 66.249.93.99` on my troubled machine:
traceroute to 66.249.93.99 (66.249.93.99), 30 hops max, 40 byte packets
1 * * *
2 * * *
3 * * *
4 * * *
(interrupted)
Best regards,
Helge Stenström
(p.s.: I'm terribly sorry if this shows up multiple times; there seem
to be mail problems)
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