From: Andrea Venturoli [mailto:[EMAIL PROTECTED] > ** 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. > >
see the lft port (layer 4 traceroute) http://www.mainnerve.com/lft/ you can use this to get an ICMP response (albeit not echo) from your isp this way. [you can't really block icmp would fragment, it would break PMTU]. --don _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
