On Thu, Dec 11, 2003 at 01:37:52AM -0500, Andrea Venturoli wrote: > ** Reply to note from Barney Wolff <[EMAIL PROTECTED]> Wed, 10 Dec 2003 11:39:00 > -0500 > > > > I don't know of anything published that does this, but it's easy to > > write a perl or shell script that pings the router at the adsl isp > > and does the necessary things when it disappears and reappears. > > Mmh, only problem is one of the ISP is famous for blocking ICMP as a whole, so no > pings work. I haven't tried this > particular line yet, but I may need to use come other protocol.
You can substitute anything that should get a response via isp1, and whose result can be tested easily. > > You start it from /usr/local/etc/rc.d (Hint - use nohup to keep it running). > Why nohup? Things started from /usr/local/etc/rc.d get a hup signal when rc is finished with all the startup scripts - I think. Anyway, if you don't use nohup, or a more-conventional way to daemonize what you've started, it will die mysteriously in a very short time. I've never seen anybody else use nohup for this purpose but it works just fine on both 4.x and 5.x. > > Without getting much fancier than is reasonable, existing connections > > will be dropped at switchovers. > > I can easily live with that. > > > I have a script that does similar things running here; email me if you > > want it. > > Why not! If you don't mind, the please send it to me :) http://www.databus.com/dslsec.tgz (FreeBSD lists don't allow attachments.) Anyone is welcome to use/copy/modify these scripts. For the two-isp problem, if you're using NAT, you probably have to kill natd, reconfigure it and restart it in the dslsec-gopri/gosec scripts. -- Barney Wolff http://www.databus.com/bwresume.pdf I'm available by contract or FT, in the NYC metro area or via the 'Net. _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
