Linux Routing Issue

From: Gus Zernial (gus_zernial_at_hotmail.com)
Date: 12/30/04 

Date: Thu, 30 Dec 2004 11:31:29 -0800

(The below all relates to attempts to set up open source software
called JavaHMO, on a Linux box, to publish content to a Tivo box
on my home network).

I have a home subnet 192.168.0. inside a Linksys firewall router.
On the subnet are wired Windows PC's and one wired Linux box. Also
wired to the firewall router is a wireless hub, and communicating
with that hub is a Tivo box with a USB wireless card. (Tivo is a
media recorder which runs Linux and has an IP address).

The Windows PC's can publish content to the Tivo box, but the Linux box
cannot do so. Network diagnostics are:

1) The Windows PC's and the Linux box can all ping each other and
everything on the subnet, including the firewall router (192.168.0.1),
the wireless hub (192.168.0.50) and the Tivo box (192.168.0.51).

2) On a Windows PC, I can tracert to everything on the subnet, including
the firewall router (192.168.0.1), the wireless hub (192.168.0.50) and
the Tivo box (192.168.0.51). All tracerts are direct - no intermediate hops.

3) On the Linux box, I can traceroute to the Windows PC's, and the
wireless hub (192.168.0.50). These traceroutes are direct - no
intermediate hops. On the Linux box I *cannot* traceroute to the
firewall router (192.168.0.1), or to the Tivo box (192.168.0.51).

4) The Kernel IP routing table on the Linux box is:

Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default 192.168.0.1 0.0.0.0 UG 0 0 0 eth0

I'm assuming that the fact that the Linux box cannot publish content to
the Tivo box is reflective of the fact that the Linux box cannot
traceroute to the Tivo box. I'm stumped on what's happening on the
network - I always thought if you could ping something you could trace
a route to it. Anyway, I'm hoping some of you network experts out there
can tell me what's wrong and how to fix!

Relevant Pages

  • Re: GPLv3 Position Statement
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  • Re: Linux Routing Issue
    ... > On the subnet are wired Windows PC's and one wired Linux box. ... > with that hub is a Tivo box with a USB wireless card. ... Network diagnostics are: ... > 3) On the Linux box, I can traceroute to the Windows PC's, and the ...
    (comp.os.linux.networking)
  • Re: Linux Routing Issue
    ... > On the subnet are wired Windows PC's and one wired Linux box. ... > with that hub is a Tivo box with a USB wireless card. ... Try traceroute -I to make Linux traceroute behave like Win tracert. ... that JavaHMO is connecting/sending anything to Tivo. ...
    (comp.os.linux.networking)
  • Re: Future direction for Linux
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