New answers tagged internet
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Two things to check that correlate to this being caused by increase LAN traffic due to new roommates.
Are there QoS (Quality of Service) settings on the router, and if so, how are they set? Skype traffic would be prioritized and if the WAN is getting saturated the router might respond by temporarily shutting of lower priority connections.
Is the router ...
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This smells like another device on your network is trying to use the same IP as you, or some trouble with DHCP.
Could you see if you can still reproduce it after assigning yourself a static IP?
Goto Network Preferences, choose your Ethernet interface, advanced, TCP/IP
Change the "Configure IPv4" dropdown to "Manually"
IPv4 Address: 192.168.1.150 ...
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With all the great diagnostic information in this question you have narrowed down the possibilities greatly.
To begin with, your pings to 192.168.1.1 greatly isolate the problem to either your router, computer, or LAN. This is not a problem with DNS or your ISP.
I'm most disturbed by the results of your ping tests to 192.168.1.1. Did you do something ...
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In addition to all the stuff here, you might want to make sure Auto Proxy Discovery is not on (as well as Automatic Proxy Configuration). That tends to cause more problems than not and it's often not needed.
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There is a great deal of information here on the troubleshooting and diagnostic end of things, but sometimes when troubleshooting it's fun to return to basics and question some assumptions.
As I mentioned in a comment, this looks very much like a QOS router kicking in due to your machine temporarily exceeding some bandwidth or packet rate cap.
What if you ...
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Could you first check that you are really using the network interface
you should:
ifconfig -a
Could you look at the output of the following commands (if en0 is the
network interface name of your Ethernet card):
netstat -I en0
To help locate the problem could you make a specific Location with just
your Ethernet card activated and if possible only using ...
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First, I see dropbox running in your menu bar; have you disabled that, yet?
Second, try removing any other startup/login items. Look in:
Login:
~/Library/LaunchAgents/
~/Library/LaunchDaemons/
System Preferences > Users & Groups > Login Items
Startup:
/Library/LaunchAgents/
/Library/LaunchDaemons/
/Library/StartupItems/
...
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OS X and iOS all save known networks, so just forget that network and tell your computer to not ask to join networks.
The steps vary, but you should be able to open help from the Finder and search for "Choose preferred Wi-Fi networks" and it will guide you to the advanced settings for networking so you can delete any networks you don't want to join again. ...
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Any hints from /var/log/system.log?
how does netstat -s look?
My hunch says delete /Library/Preferences/SystemConfiguration and add back the network interfaces manually.
It looks like you tried many things already though.
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When your connections starts timing out, can you do arp -an in Terminal.app and see if you still have all MAC addresses in the ARP table? as in - your router's MAC address, or the host you're trying to ping?
If you do (and you have the time before it starts working again), can you flush the arp table (sudo arp -ad) and then see if your router's MAC address ...
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You can adjust the order of your network interfaces in the Network panel of System Preferences. This allows you to set the primary adaptor for your network location, which in your case should be the Wi-Fi adaptor, since that provides the actual correct default route to the Internet.
The re-ordering UI is accessible by clicking on the 'gear' icon below the ...
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The problem turned out to be the existence of two default routes, one of which was not valid. I reconfigured my LAN DHCP server to not specify a router and now my second default route is created pointing at simply "link#4" instead of at an IP on the LAN.
I am hopeful of a solution whereby the state of the LAN's routing configuration would not impair other ...
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No. This isn't a function of the iPhone OS from Apple. If this isn't a short term need, there might be a jailbreak tweak to turn the OS into a fully functioning router / hotspot, but the hardware isn't designed to extend a network as your use case requires.
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Curious problem considering it persists of ethernet. I had a similar issue but found WiFi interference from other networks to be the problem. Switching to a 5GHz band fixed my problem, which is guess is worth a shot.
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Mac OSX Hints http://hints.macworld.com/article.php?story=20080605143917233
on dropped connections because DNS lookups fail pending DCHP identification
of a router ..
try configuring your Mac to use the OpenDNS (OpenDNS.ORG) servers
instead of your ISPs DNS servers.
It is most likely the DNS and/or a acceleration setting in your modem settings ...
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