Don Tek wrote:
I've recently implemented a firewall with two internet connections
using multipath routing and round-robin outbound load balancing.
I am looking for a solution from the shell to detect failure of these
two internet gateways so I can force routing and pf changes from a
script.
I need something more robust than simply checking to see if the
interface is up or down.
I have managed a solution using traceroute that allows me to
accomplish half of my goal. I can detect a failure and "down" that
route, however, once I delete the default route from the routing table
for the failed connection, I can no longer test it with traceroute.
This is because it doesn't appear to me that OpenBSD's traceroute
allows forcing an interface to work on.
I am looking for better solutions from some of you more experienced
users. Any suggestions are welcome.
ifstated
