On 20/06/12 10:56, Thomas Hood wrote: > I can imagine that it will take a lot of care to avoid introducing races > inside dnsmasq.
It's OK: notification of new interfaces comes via netlink, so it gets synchronised via the select() call just like everything else. Have I mentioned yet that Simon is a hero? :-) New code is in git (and I released 2.63test1) change --bind-interfaces to --bind-dynamic as see how it goes. > > Do we have to worry about races outside of dnsmasq? Suppose someone was > running dnsmasq in unbound mode and has now switched to the new improved > dnsmasq in bind-interfaces-dynamically mode. Now an interface comes up > but there is a delay before dnsmasq notices this and starts listening on > it. Problem? Because it's using netlink rather than polling, the delay is pretty short (I know that's not a solution to races, but it does help.) Simon. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/959037 Title: NM-controlled dnsmasq prevents other DNS servers from starting Status in “djbdns” package in Ubuntu: New Status in “dnsmasq” package in Ubuntu: Confirmed Status in “network-manager” package in Ubuntu: Triaged Bug description: As described in https://blueprints.launchpad.net/ubuntu/+spec/foundations-p-dns- resolving, network manager now starts a dnsmasq instance for local DNS resolving. That breaks the default bind9 and dnsmasq installations, for people that actually want to install a DNS server. Having to manually comment out "#dns=dnsmasq" in /etc/NetworkManager/NetworkManager.conf doesn't sound good, and if it stays that way, it should be moved to the bind9 and dnsmasq postinst scripts. Please make network-manager smarter so that it checks if bind9 or dnsmasq are installed, so that it doesn't start the local resolver in that case. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/djbdns/+bug/959037/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
