Phone doesn't use WiFi DNS when also connected to cell

[Peter Cliff]

Apologies if this is covered elsewhere but I couldn't find it and wasn't sure what package would cover it so opted for system-settings. It is a fairly specific bug given not everyone will be using BT wifi, but probably the issue will arise with other ISPs.

When I turn on wifi at home, my phone connects to the Hub fine but Web access is limited because the phone continues to use the DNS settings from the cell network (I think). I get an error from BT about using external DNS rather than those it supplies (required for the child filter). I haven't tried disabling the filters yet but I could I suppose.

If I turn on flight mode and then re-enable wifi everything works fine but then I don't get phone calls, etc. of course.

Turing off flight mode breaks stuff again.

The phone is a BQ Aquaris E4.5 Ubuntu Edition running Ubuntu 14.10 (r22) Image Part 20150508 Ubuntu Utopic Unicorn (Development branch) armhf(20150508-031218), Device Image part 20150505-db7b5bd, Device build description KRILIN01A-S14A_BQ_L100EN_1022_150508.

[Mathieu Trudel-Lapierre (cyphermox)]

Could you attach /var/log/syslog from the phone when it's connected to both wifi and 3G? We should be able to know from there whether it includes all the nameservers it should.

From there, it's up to whichever responds faster among all the nameservers, which will be used.

[Peter Cliff (pixelatedpete)]

Thanks replying and apologies for the delay - busy week! Finally found some time to dig out the log (learning a thing or two about adb on the way which has been good). I whittled it down to what I hope are the important parts - shows connecting to Vodafone then BT WiFi. Looks like both nameservers are there but it still didn't work connecting to various Web pages.

[Robie Basak (racb)]

This looks like a duplicate of bug 1270189.

[Peter Cliff (y-pete)]

@Robie Basak - yes. Sounds like the same thing. This was not fixed by the 15.04 OTA. As I've only one phone I ended up flashing BQ's Android image to my Aquaris E4.5 (Ubuntu Edition) now so cannot test further.