>From here I picked idea of testing different wlan connections (router and smart phone as hot spot) and looking for differences. Although there was another reason for this bug and this bug is not similar but some similar error messages.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1683066 Title: Broken DNS when using Three UK mobile internet (17.04 zesty) Status in systemd package in Ubuntu: Confirmed Bug description: When connected via 4G to Three/3 (UK), DNS lookups fail (though the internet is otherwise working). The connection receives the correct DNS servers, but as far as I can work out systemd-resolve is unaware of them. Connection info screenshot is attached. DNS lookups time out: $ nslookup www.bbc.co.uk ;; connection timed out; no servers could be reached However they work when manually specifying the DNS server: $ nslookup www.bbc.co.uk 217.171.132.0 Server: 217.171.132.0 Address: 217.171.132.0#53 Non-authoritative answer: www.bbc.co.uk canonical name = www.bbc.net.uk. Name: www.bbc.net.uk Address: 212.58.246.54 Name: www.bbc.net.uk Address: 212.58.244.26 Connections to IP addresses work (though redirect to a Three page at present): $ curl http://212.58.246.54 -v * Rebuilt URL to: http://212.58.246.54/ * Trying 212.58.246.54... * TCP_NODELAY set * Connected to 212.58.246.54 (212.58.246.54) port 80 (#0) > GET / HTTP/1.1 > Host: 212.58.246.54 > User-Agent: curl/7.52.1 > Accept: */* > < HTTP/1.1 302 Moved Temporarily < Location: http://mbbinfo.three.co.uk/payg_mbb_data_usage2.html < Content-Type: text/plain; charset=UTF-8 < Content-Length: 0 < * Curl_http_done: called premature == 0 * Connection #0 to host 212.58.246.54 left intact Below is the output of systemd-resolve --status: $ systemd-resolve --status Global DNS Servers: 8.8.8.8 8.8.4.4 2001:4860:4860::8888 2001:4860:4860::8844 DNSSEC NTA: 10.in-addr.arpa 16.172.in-addr.arpa 168.192.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in-addr.arpa 21.172.in-addr.arpa 22.172.in-addr.arpa 23.172.in-addr.arpa 24.172.in-addr.arpa 25.172.in-addr.arpa 26.172.in-addr.arpa 27.172.in-addr.arpa 28.172.in-addr.arpa 29.172.in-addr.arpa 30.172.in-addr.arpa 31.172.in-addr.arpa corp d.f.ip6.arpa home internal intranet lan local private test Link 4 (wlp4s0) Current Scopes: none LLMNR setting: yes MulticastDNS setting: no DNSSEC setting: allow-downgrade DNSSEC supported: yes Link 3 (wwp0s20f0u6i12) Current Scopes: LLMNR/IPv4 LLMNR/IPv6 LLMNR setting: yes MulticastDNS setting: no DNSSEC setting: allow-downgrade DNSSEC supported: yes Link 2 (enp0s31f6) Current Scopes: none LLMNR setting: yes MulticastDNS setting: no DNSSEC setting: allow-downgrade DNSSEC supported: yes Note: Everything works fine on Wi-Fi, this problem is only happening on 4G. Note 2: I removed the automatically added UdevDb.txt and CurrentDmesg.txt attachments as they contained serial numbers of devices in my computer (such as for my SSD). ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: systemd 232-21ubuntu2 ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8 Uname: Linux 4.10.0-19-generic x86_64 ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 CurrentDesktop: Unity:Unity7 Date: Sat Apr 15 20:54:33 2017 InstallationDate: Installed on 2017-04-08 (7 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Beta amd64 (20170407) MachineType: LENOVO 20HDCTO1WW ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-19-generic.efi.signed root=UUID=88cb6912-997a-41b4-a0f8-050239177218 ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/29/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N1QET53W (1.28 ) dmi.board.asset.tag: Not Available dmi.board.name: 20HDCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1QET53W(1.28):bd03/29/2017:svnLENOVO:pn20HDCTO1WW:pvrThinkPadT470:rvnLENOVO:rn20HDCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20HDCTO1WW dmi.product.version: ThinkPad T470 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1683066/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
