I have a similar problem. Networkmanager says connected, but sometimes
there is no DNS configurated, so there is no working connection.
It would be better to retry the connection until a working connection is
in place.
Here is a output of what happened:
pat...@ubuntu:~$ nm-tool
NetworkManager Tool
State: connected
** (process:2935): WARNING **: Tried to set deprecated property gsm/band
- Device: ttyUSB0 [3 Bredband] ------------------------------------------------
Type: Mobile Broadband (GSM)
Driver: option1
State: connected
Default: yes
Capabilities:
IPv4 Settings:
Address: 95.209.51.197
Prefix: 32 (255.255.255.255)
Gateway: 10.64.64.64
pat...@ubuntu:~$ nslookup www.dn.se
;; connection timed out; no servers could be reached
pat...@ubuntu:~$ nslookup www.dn.se
;; connection timed out; no servers could be reached
pat...@ubuntu:~$ nm-tool
NetworkManager Tool
State: connected
** (process:2966): WARNING **: Tried to set deprecated property gsm/band
- Device: ttyUSB0 [3 Bredband] ------------------------------------------------
Type: Mobile Broadband (GSM)
Driver: option1
State: connected
Default: yes
Capabilities:
IPv4 Settings:
Address: 95.209.51.197
Prefix: 32 (255.255.255.255)
Gateway: 10.64.64.64
pat...@ubuntu:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.64.64.64 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ppp0
0.0.0.0 10.64.64.64 0.0.0.0 UG 0 0 0 ppp0
pat...@ubuntu:~$ nslookup www.dn.se
;; connection timed out; no servers could be reached
pat...@ubuntu:~$ nslookup www.dn.se
;; connection timed out; no servers could be reached
pat...@ubuntu:~$ nm-tool
NetworkManager Tool
State: connected
** (process:3094): WARNING **: Tried to set deprecated property gsm/band
- Device: ttyUSB0 [3 Bredband] ------------------------------------------------
Type: Mobile Broadband (GSM)
Driver: option1
State: connected
Default: yes
Capabilities:
IPv4 Settings:
Address: 95.209.67.230
Prefix: 32 (255.255.255.255)
Gateway: 10.64.64.64
DNS: 80.251.201.177
DNS: 80.251.201.178
pat...@ubuntu:~$
--
Unable to connect, DNS error
https://bugs.launchpad.net/bugs/468559
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