I am a bit confused about the role of rtsold and rtadvd.

here is what I think of as the typical definitions.

a machine that acts as a router has by definition more than one interface and 
a routing table.  It may or may not run a routing program (dynamic routing) 
and may or may not run rtadvd.

a machine that has a single interface is a host machine and does not run 
routing programs and only has routing table entries for link local addresses 
and the gateway.  It will run rtsold if there is a router between it's 
resident network and other networks.

but: 
some machines that are hosts and have more than one interface are not routers.
we have some machines that have multiple interfaces, e.g. private stub 
networks, wireless interfaces that may at times act as Access Points (i.e. 
run in HostAP mode).

some networks are very simple and have static routing and hence do not require 
a routing program.

so, finally my question is this.  Under what conditions are the following 
programs required?

routing software - e.g. route6d or zebra

rtadvd

rtsold

it seems to me that unless something is changing, rtsold and rtadvd are not 
really useful

by the same token though, the same kinda applies to routing programs, so if 
you are running e.g. route6d, shouldn't you automatically run rtadvd.

similarly, if inetd sees router advertisement icmp6 packets, shouldn't it be 
capable of involking rtsold??? Or something kinda similar?


-- 
Dr Paul van den Bergen
Centre for Advanced Internet Architectures
caia.swin.edu.au
[EMAIL PROTECTED]
IM:bulwynkl2002
"And some run up hill and down dale, knapping the chucky stones 
to pieces wi' hammers, like so many road makers run daft. 
They say it is to see how the world was made."
Sir Walter Scott, St. Ronan's Well 1824 

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