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When you were connecting to this 4G network, how was that connection
managed? Were you using NetworkManager, or some other network
management tool?
** Changed in: systemd (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1683066
Title:
Broken DNS when using Three UK mobile internet (17.04 zesty)
Status in systemd package in Ubuntu:
Incomplete
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
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