Hello! [os Leap 15.2, xfce, Network Manager, Firefox 78.3.0esr, IPV4 only] A (probably totally ignorant) DNS question: which resolver(s) will this system be actually using? A system has an Arris SURFboard cable modem, SBG7400AC2. This is a AC2350Mbps combined router/modem. Though it's owned, the ISP can and does change the firmware not so infrequently (docsis 3). This modem has a firmware option to turn off the ISP's two resolvers and enter my own resolvers (up to three) but doing so is flakey: change it, save/reload, and the ISP's resolver addresses return to the display. In frustration I removed it from the power line. I got busy with something else and didn't get back to this for about 6 hours. Plugged in the power and, hello, my own resolver addresses were now displayed in the 'change resolver' section as the current running set. Good. But the section of the router/modem firmware that displays the current 'System Information' still displays the ISP's resolvers. Network Manager's gui (right-click) 'Connection Information' displays my chosen resolvers in the order I set them in the modem/router firmware. In dhclient.conf I have a 'prepend domain-name-servers' with the wanted resolvers (in reverse order so I can tell effect if any) but it appears this isn't being imposed. In Network Manager's gui 'Edit Connection / Editing ... / IPV4 Settings / Additional DNS servers' I have not added anything, but here's another place to set resolvers. Finally, I have set Firefox's 'DNS over HTTPS' option which says it will use Cloudflare for resolver. SO... there are apparently way too many ways to set a resolver, all seemingly independent of each other. Which one overrules the others? I'm thinking it's the Mozilla/Cloudflare thing for any DNS queries going through Firefox browser. But which resolver gets used for queries not going through Firefox browser? I'm wondering if the ISP's docsis tinkering may be the final overriding one (he who controls the firmware controls the world...) Thanks for a clue :) Ralph -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org