Just noticed this as well: http://mydeviceinfo.comcast.net/device.php?tier=-1&devid=298&e=0&d3=0&s=n&so=0&sc=1546
To quote the red bit at top: "Comcast has identified a software defect on the Arris TG852 and TG862, which may cause problems for a small number of users attempting to use third party DNS services. Arris and Comcast are working to correct this issue and will deploy updated device firmware to resolve the issue. If a customer does not wish to wait for the updated firmware, the customer may email us at we_can_h...@cable.comcast.com and a replacement device will be provided at no cost to the customer." Although I am using the default Comcast provided DNS servers of 75.75.75.75 and 75.75.76.76, so not sure this would affect it or not. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/991308 Title: DNS Querying fails if any DNS server is unreachable Status in “dnsmasq” package in Ubuntu: New Status in “network-manager” package in Ubuntu: Incomplete 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/991308/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
