[Expired for dnsmasq (Ubuntu) because there has been no activity for 60
days.]
** Changed in: dnsmasq (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/991308
Title:
Dnsmasq fails to resolve if any upstream nameserver is unreachable
Status in “dnsmasq” package in Ubuntu:
Expired
Status in “network-manager” package in Ubuntu:
Invalid
Bug description:
Release: 12.04
Hardware: HP Compaq 6910p Laptop
If the backup DNS server is unreachable, dnsmasq does not try to reach
primary DNS server.
In the following default configuration (clean install of 12.04) 1 out
of 4 DNS queries fail. (DNSMasq seems to rotate queries between the
listed servers)
wlightning@archon:~$ cat /run/nm-dns-dnsmasq.conf
server=75.75.75.75
server=75.75.76.76
wlightning@archon:~$
wlightning@archon:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search hsd1.or.comcast.net
wlightning@archon:~$
wlightning@archon:~$ nm-tool
NetworkManager Tool
State: connected (global)
- Device: ttyUSB0
--------------------------------------------------------------
Type: Mobile Broadband (CDMA)
Driver: sierra
State: disconnected
Default: no
Capabilities:
- Device: wlan0
----------------------------------------------------------------
Type: 802.11 WiFi
Driver: iwl4965
State: unavailable
Default: no
HW Address: 00:1D:E0:35:69:AF
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
- Device: eth0 [Wired connection 1]
-------------------------------------------
Type: Wired
Driver: e1000e
State: connected
Default: yes
HW Address: 00:1B:38:E7:F5:02
Capabilities:
Carrier Detect: yes
Speed: 1000 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 10.0.0.11
Prefix: 24 (255.255.255.0)
Gateway: 10.0.0.1
DNS: 75.75.75.75
DNS: 75.75.76.76
wlightning@archon:~$
mtr of 75.75.75.75 (anycast addr):
My traceroute [v0.80]
archon (0.0.0.0)
Sun Apr 29 10:13:58 2012
Keys: Help Display mode Restart statistics Order of fields quit
Packets
Pings
Host Loss% Snt Last
Avg Best Wrst StDev
1. 10.0.0.1 0.0% 51 0.6
0.6 0.6 1.5 0.2
2. 73.94.124.1 0.0% 51 9.0
9.2 7.1 14.7 1.5
3. 68.85.148.1 0.0% 51 7.9
10.6 7.4 24.7 4.0
4. 68.87.216.13 0.0% 51 9.2
19.8 8.5 150.8 29.0
5. 68.87.218.162 0.0% 50 10.8
14.1 8.1 85.0 13.4
68.87.218.158
6. 68.87.216.41 0.0% 50 9.5
13.2 9.5 67.4 8.6
7. 75.75.75.75 0.0% 50 9.9
11.0 9.1 17.2 1.8
mtr of 75.75.76.76 (anycast addr):
My traceroute [v0.80]
archon (0.0.0.0)
Sun Apr 29 10:12:42 2012
Keys: Help Display mode Restart statistics Order of fields quit
Packets
Pings
Host Loss% Snt Last
Avg Best Wrst StDev
1. 10.0.0.1 0.0% 51 0.6
0.8 0.5 3.6 0.5
2. 73.94.124.1 0.0% 51 9.0
9.3 7.0 18.3 2.5
3. 68.85.148.9 0.0% 51 7.3
9.6 7.2 22.3 2.9
4. 68.85.243.253 0.0% 51 8.3
13.8 7.5 81.9 15.6
5. 68.86.95.97 0.0% 51 14.5
17.2 11.9 33.0 4.4
68.86.91.197
68.86.90.213
68.86.95.93
68.86.95.89
6. 68.86.95.214 0.0% 51 39.5
41.5 38.1 74.5 6.4
7. 68.86.199.130 0.0% 51 51.9
40.8 38.2 55.3 3.3
8. 75.75.76.76 44.0% 50 38.5
40.2 38.3 46.2 2.2
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