route entries after ICMP redirect

[Uwe Doering]

Sergey Matveychuk wrote:
> I've got some problem with route entries that was created after ICMP 
> redirect messages. They are never expired.
> 
> Our default gateway (it's a HP switch) send ICMP redirect messages if it 
> see a short path to destination. It's makes it not so overloaded. But 
> pathes sometime changed. There is no problem with Windows workstations, 
> they are rebooted daily. But my FreeBSD boxes hold dinamic route entries 
> forever.
> 
> I've looked through RFCs and Stevens' books and found no answer on what 
> TTL for this entries.
> Now I just add route flush as cron job. But may be there is another way?

This has been fixed in CVS in MAIN (rev. 1.52) and MFC'ed to RELENG_4 
(rev. 1.37.2.5) and RELENG_5 (rev. 1.51.4.2) a couple of weeks ago:

   http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/in_rmx.c

So either syncing to one of these branches or applying the relevant 
patch manually to your kernel sources ought to solve the problem.

    Uwe
-- 
Uwe Doering         |  EscapeBox - Managed On-Demand UNIX Servers
gemini at geminix.org  |  http://www.escapebox.net