Am Mon, 9 Dec 2019 11:58:22 -0500 schrieb John Siu <john.sd....@gmail.com>:
dnsmasq sends queries to all servers occasionally to determine which one replies fastest, and then keeps using that one exclusively for a while. Do you see every single query sent to all servers, or just the first one after restarting dnsmasq? - Simon > OS: Ubuntu 18.04 with all updates > dnsmasq version: 2.79-1 > > According to man page: > > --all-servers > By default, when dnsmasq has more than one upstream server > available, it will send queries to just one server. Setting this flag > forces dnsmasq to send all queries to all available servers. The > reply from the server which answers first will be returned to the > original requester. > > I don't have that flag in command line or in the config file. However > with "log-queries=extra" in config file, I am seeing following: > > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 query[A] > news.com from 10.10.10.101 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 2001:1998:f00:2::1 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 2001:1998:f00:1::1 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 2606:4700:4700::1001 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 2606:4700:4700::1111 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 2001:4860:4860::8844 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 2001:4860:4860::8888 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 209.18.47.63 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 209.18.47.62 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 209.18.47.61 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 1.0.0.1 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 1.1.1.1 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 8.8.4.4 > Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded > news.com to 8.8.8.8 > Dec 09 11:29:25 door dnsmasq[9403]: 3640 10.10.10.101/49351 reply > news.com is 35.190.79.82 > > Is --all-servers behavior changed to default on? Is there a way to > revert it? > > Thank you! > > John Siu _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss