I've had a problem with being able to ping out to the internet from my
gentoo box, while at the same time I'm able to ping outbound from
several windows boxes on same home lan.

I don't run a firewall at all from linux but do have a Netgear
switch/router/Firewall upstream between me and the internet cable
modem. 

Output of iptables -L:
  
 reader > sudo iptables -L
  Chain INPUT (policy ACCEPT)
  target     prot opt source               destination         
  
  Chain FORWARD (policy ACCEPT)
  target     prot opt source               destination         
  
  Chain OUTPUT (policy ACCEPT)
  target     prot opt source               destination 

What I'm asking for here is advice about where to start debugging
this.

I can ping anything on my home lan, but nothing on the internet.
Not even my IP's nameservers.

And as mentioned, at the same time I'm able to ping from any of
several windows boxes out to the internet.

My router/fw can be set to deny specific machines outbound traffic but
that is not done in this case.  So the solution must reside somewhere
in my gentoo install.

What things should I be checking.

A ping attempt like this:

  ping ftp.ucsb.edu
  PING ftp.ucsb.edu (128.111.24.43) 56(84) bytes of data.

Just never moves any further, but you can see it has resolved the
alpha address to numeric forum so must have contacted and received
info from the nameserver.


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