route entries after ICMP redirect

[Sergey Matveychuk]

gnn at FreeBSD.org wrote:

> If you want to handle this in a more clever way than a cron job you
> could write a small daemon which reads routing messages and does "the
> right thing" for whatever your situation is.

I've explore a code and found I can do quite easy addition for dynamic 
routes - fill an expire field, check it periodicaly and remove expired 
entries (just like for arp entries).

I think to do a sysctl variable for indication what time will set as 
expire values and set it to zero by default (no expires).

-- 
Sem.