-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ,--[ On Fri, Jan 18, 2008 at 01:40:26PM +0530, Kenneth Gonsalves wrote:
[...] | i am using opendns servers - but still if an ISP goes down the dns | gets b0rked That's probably because you need to switch gateways. | > | > Also you a simple workaround is that you can do this every 20-30s, | > "ping -c2 -I ethX [ip-address]" and see if exitcode is not 0, which | > implies ethX is not working. Hmm...? | | ping will work to check if the isp is down - and we can restart with | new config. How to check if it has come up? Dont forget, ping has to | go through the firewall and if the ISP in question is not on the | firewall, how to find out? I hope by "ISP is down" you meant gateway is not replying, but interface is still up, right ? So, if you do ping with '-I ethX', it'll use IPv4 address assigned to the interface 'ethX' as source address of ICMP echo packets. So make sure you've a source-based rule already set for 'ethX' (Hint: ip rule from ). What kind of firewall do you've ? Do you change firewall rules on fly if ISP goes down, hmm...? HTH - -- Ashish Shukla आशीष शुक्ल http://wahjava.wordpress.com/ ·-- ·- ···· ·--- ·- ···- ·- ·--·-· --· -- ·- ·· ·-·· ·-·-·- -·-· --- -- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHkGP7Hy+EEHYuXnQRAjknAJ40+9jcnle0XFDm07liGkaoSg8yuACg5U8h 1hdTqx1pyMa2QhdLFbVvtTo= =TCI+ -----END PGP SIGNATURE----- _______________________________________________ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - February 22/23, 2008 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
