Greetings, I’ve been fighting a two-fold problem with named (bind 9.16.11) running on macOS.
1: If an ethernet interface being listened to drops link, named immediately stops listening to it: 12-Feb-2021 17:33:19.326 no longer listening on 192.168.88.220#53 and 2: when link returns I get 2 tries to reestablish listening: 12-Feb-2021 17:33:39.458 listening on IPv4 interface en1, 192.168.88.220#53 12-Feb-2021 17:33:39.463 creating IPv4 interface en1 failed; interface ignored 12-Feb-2021 17:33:41.946 listening on IPv4 interface en1, 192.168.88.220#53 12-Feb-2021 17:33:41.951 creating IPv4 interface en1 failed; interface ignored which both fail because named is no longer running as root. -------------- Where I’m confused is that this ISC KB article: https://kb.isc.org/docs/aa-00420 seems to imply that the "no longer listening" event is due to a periodic interface scan finding the interface "unavailable". That doesn’t fit my observations since it happens as soon as link is lost. If some minutes-long periodic scan were needed to detect the interface being down it would take, on average, half of that period to happen. It does not. Further, I tried what the KB article advised by adding the option: interface-interval 0; That does seem to stop the periodic scan (since my log is no longer filled with errors) but the “no longer listening” event still occurs right when the interface drops. -------------- Is it not possible to have named drop to a non-root user (via -u) but still recover from (or ride through) a momentary ethernet link loss? Having the server stop working due to a switch I have no control over burping is very suboptimal. Thanks for any ideas. -Mike _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
