Re: [expert] Can't network because of ARP

[Jean-Louis Debert]

Marco Fioretti wrote:
> When pinging from D to L, tcpdump on both machines says:
> 
> D       arp who-is 192.168.1.2 tell at polaris.net.local
> 
> L       arp who-is 192.168.1.2 tell at polaris.net.local
>         arp reply 192.168.1.2 is-at <its Ethernet address>
> 
> ARP request make it to the laptop, it (says that) is answering,
> but the desktop doesnt see nothing, so the whole thing dies
> right there.
> 
> Pinging the other way never makes it to the desktop.

Just an idea: wouldn't you have any firewall rules preventing 
input packets to reach the desktop (but not the laptop) ???

This could be the case e.g. if you really wanted to prevent
input packets from Internet (on ppp interface) but misconfigured
(or forgot) the interface in your fw rules ...

Just an idea ...

-- 
Jean-Louis Debert        [EMAIL PROTECTED]
74 Annemasse  France
old Linux fan