[comp.unix.wizards] Routes appear magically

lazear@gateway.mitre.org (07/23/90)

Can someone suggest why our Sun server magically accumulates
routes for nets around the country (pointing to our local gateway)
when all we have in our /etc/rc files is a default gateway route
command?  We are NOT running "routed".  We ARE running a newer
version of "sendmail".  The routes being added have "use" counts
and an "H" flag (undocumented).  The routes are correct, but their
source and necessity are in question.  Thanks for any help.

	Walt Lazear
	MITRE Corp.

mike@BRL.MIL ( Mike Muuss) (07/24/90)

The H flag means "route to host".  I assume that there was also a
D flag?  (Dynamic route?).  If so, the route was established via
an ICMP-Redirect-Host message.  Presumably the redirect was sent
by your default gateway, advising your machine to use some other
gateway.  This may be a stedy-state condition (ie, the default
gateway always will say that), or it may be a byproduct of route
fluctuations between your several gateway machines.

This is generally considered normal.
	Best,
	 -Mike