You can set interface-interval to a low number to make BIND scan for new interfaces frequently:
interface-interval interface-interval minutes; interface-interval defines the time in MINUTES when scan all interfaces on the server and will begin to listen on new interfaces (assuming they are not prevented by a listen-on option) and stop listening on interfaces which no longer exist. The default is 60 (1 hour), if specified as 0 NO interface scan will be performed. The maximum value is 40320 (28 days). This option may only be specified in a 'global' options statement. (source: http://www.zytrax.com/books/dns/ch7/periodic.html) -----Original Message----- From: bind-users-bounces+tsnyder=rim....@lists.isc.org [mailto:bind-users-bounces+tsnyder=rim....@lists.isc.org] On Behalf Of Mihai Moldovan Sent: Thursday, April 12, 2012 10:33 AM To: bind-users@lists.isc.org Subject: re-bind named to all interfaces Hello list, I'm running bind9 on my local router which is connected to the internet via a ppp link over my ADSL modem. This link has a static IP assigned, but is not permanently up. Once a day the connection is dropped for a few seconds and re-established, which leads to the following problem: - starting bind9 (configured with listen-on { any; };) works fine, it binds to the following interfaces: 127.0.0.1:domain (lo), 192.168.0.1:domain (br0), 85.183.67.131:domain (ppp0) - once ppp0 goes down, bind9 will drop the binding on 85.183.67.131:domain (ppp0) - once ppp0 goes up again, bind9 won't detect the new network topology, thus remains bound to lo and br0 only; any nameserver on the internet won't be able to contact my bind9 anymore. Is there any way to tell bind9 to re-evaluate the network situation and bind to all new interfaces (if allowed, see listen-on)? I have tried firing up rndc reload and rndc reconfig via the pppd if-up/if-down scripts, but neither try was successful. Seems like the only viable solution for now is to restart bind9 completely over the init script on ifup/ifdown, but this sounds hacky and is disrupting service in a way I don't like. Does anyone here have a similar setup and solved this (admittedly minor) problem? If not, I'd opt for re-discovering the network topology on reload/reconfig (as a restart is flushing caches, loading all zones and discovering network topology too.) Best regards, Mihai --------------------------------------------------------------------- This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
