My network at home is setup as follows:
Internet
|
| (external NIC)
|
ariel
| |
(192.168.1.10) | | (192.168.247.10) <--- (two internal NICs)
| |
____________| |___________
| |
| |
| |
wiredSubnet wirelessSubnet
--------------------- -----------------------
taz (192.168.1.2) paltiel (192.168.247.6)
woody (192.168.1.3)
ezekiel (192.168.1.4)
noah (192.168.1.5)
This setup has worked fine for months, properly routing traffic between the
wired and wireless subnets, and also allowing both subnets to access the
Internet using IPMasq. I hadn't used the laptop for over a month, and when I
fired it up today is when I noticed these usual problems.
1. paltiel (on the wireless subnet) can still access the Internet just fine,
but it is acting weird when accessing the wiredSubnet. paltiel can access
taz and noah, but cannot access ezekiel nor woody (neither ssh nor ping works).
The following traceroute to taz is normal:
paltiel:/home/thoover# traceroute taz
traceroute to taz (192.168.1.2), 30 hops max, 38 byte packets
1 192.168.247.10 (192.168.247.10) 8.991 ms 10.798 ms *
2 taz (192.168.1.2) 10.672 ms 10.282 ms 10.465 ms
but the following traceroute to ezekiel doesn't work:
paltiel:/home/thoover# traceroute ezekiel
traceroute to ezekiel (192.168.1.4), 30 hops max, 38 byte packets
1 192.168.247.10 (192.168.247.10) 137.452 ms 10.118 ms 24.051 ms
2 * * *
3 * * *
4 * * *
5 * * *
2. From the wired side, taz and noah can ping paltiel, but neither ezekiel nor
woody can ping paltiel (which I think confirms a routing problem). For some
reason ariel is able to properly route between paltiel and either taz or noah,
but not between paltiel and either ezekiel or woody. All machines can connect
to ariel, and ariel can connect to all other machines (including ezekiel and
woody). I thought it was some kind of weird routing problem, so here's the
routing tables for both paltiel, ariel and ezekiel (which all appear normal to
me):
paltiel:/home/thoover# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.247.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.247.10 0.0.0.0 UG 1 0 0 eth0
ariel:/home/thoover# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
216.87.138.200 0.0.0.0 255.255.255.248 U 0 0 0 eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.247.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
0.0.0.0 216.87.138.201 0.0.0.0 UG 0 0 0 eth0
ezekiel:/home/thoover# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.1.11 0.0.0.0 UG 0 0 0 eth0
HELP!! Does anyone have any idea what I should check next? The only change
that has been made to any of the systems since they were working normally is a
couple of "apt-get update; apt-get upgrades" over the past month. BTW- all
machines are running potato with kernel 2.2.15.
--
Tom Hoover N5NTM <[EMAIL PROTECTED]> - http://www.hisword.net/tom
- checkout HisWord(tm) Palmtop Bible at the above URL -
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