From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <72cdc41e787fc8f1d016b52a33f8f481@plan9.bell-labs.com>
From: "Russ Cox" <rsc@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] networking troubles
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Date: Sat,  4 May 2002 01:52:18 -0400
Topicbox-Message-UUID: 87ea59b6-eaca-11e9-9e20-41e7f4b1d025

> *	How does one test whether the network connection is up? ip/ping?

netstat -i
is a good start.

> *	Does 'ip/ipconfig ether /net/ether0 unbind' set the card to a
>	state where it can be reassigned with 'ip/ipconfig -g ga.te.way.addr
>	ether /net/ether0 ip.a.d.dr net.m.a.sk' or is there more to do?

i think so.  to be sure, you can do

	echo -n unbind >/net/ipifc/0/ctl

> *	Must the first server on the network (which will be the dhcp and
>	auth server) set it's ip in /rc/bin/termrc (or cpurc) or can a well
>	formed /ndb/local assign it?

i think you have to set it in termrc or cpurc.
for example, our standalone auth/dhcp server has
two addresses and uses:

# start network
if(test -e /net/ipifc/clone){
	ip/ipconfig -g 135.104.9.1 ether /net/ether0 135.104.9.7 255.255.255.0
	ip/ipconfig ether /net/ether0 add 135.104.9.115 255.255.255.0
}

> *	If after assigning the ip in /rc/bin/termrc and not getting a
>	"cant look up my ip" error from /ndb/dns, one can't ip/ping anything
>	what are the possible problems?

perhaps your routing table is wrong.

cat /net/iproute

try pinging yourself.  that should work
as long as the ip interface is set up,
independent of routing.

russ