Strange issue - No Internet Access - dhcp

  • Marcus Aurelius
Posted: Mon, 01/23/2012 - 22:35
Hello, My situation is a little strange. I have a HP Pavilion dv4 2045-dx laptop dual booted with Windows 7 on one side and 64 Studio (GNU/Linux/Debian) on the other side. (64studio-2.1-amd64.iso) On my home network, I can access the internet in Windows 7 (both wired and wireless). On my home network, I can access the internet in 64 Studio using a wired dhcp connection. However I do not have the driver to get my Atheros wireless working... I am not concerned about the wireless in this post. However, At work, I can connect both wired and wireless using Windows 7. At work, I can NOT connect using wireless (no drivers / never mind this) OR wired. I get a message that I am "connected to the wireless network." An IP is assigned 169.254.113.34. I can ping my own IP (from within) but I can not ping anything else on the network or internet. Also I cannot ping the above IP from a different windows machine on the same network. Now here is the tricky part. I mentioned that windows 7 can access the internet on this network. I also had a ubuntu machine that can access the internet on this network. However my newly installed 64 Studio can not. The network I am on is a public library network. They have a Cassie Time Sharing system which they use which allows patrons to use their windows library computers between open and closing hours. 15 minutes before closing the library computers are automatically logged off using this time sharing system. I have noticed that DURING library hours I can NOT connect to the internet using 64 Studio. AFTER the computers are automatically logged off before close using Cassie, I CAN NOW access the internet on 64 Studio. My question is if Ubuntu works and 64 Studio doesn't (during the day when Cassie is on) and they are both built on Debian, what is causing this strange problem with me connecting using 64 Studio? There is no reason (from the library's perspective) that I shouldn't be able to connect during the day with 64 Studio. I would be very interested in your thoughts and solutions getting this wired connection to work like Ubuntu did. Thank you. Additional info about the library's network: What I know about the network is that they have a T1 line for their staff coming in, and a roadrunner cable connection coming in for their patrons into a Cisco 2900 series router. They have an HP Procurve switch 2610 connected to that divided half staff and half patrons. I know recently the library changed their system where fiber connects to the building, but their HP Procurve switch going to the computers is not a fiber switch. Other info that may help: netstat, dhclient and ifconfig; user1@64studio:~$ sudo netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 user1@64studio:~$ --------------------------------------------------------- user1@64studio:~$ dhclient eth0 64studio:/home/user1# dhclient eth0 Internet Systems Consortium DHCP Client V3.0.4 Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ Listening on LPF/eth0/00:23:5a:c9:2b:13 Sending on LPF/eth0/00:23:5a:c9:2b:13 Sending on Socket/fallback DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 No DHCPOFFERS received. No working leases in persistent database - sleeping. 64studio:/home/user1# ------------------------------- user1@64studio:~$ sudo ifconfig eth0 Link encap:Ethernet HWaddr 00:23:5A:C9:2B:13 inet addr:169.254.113.34 Bcast:169.254.255.255 Mask:255.255.0.0 inet6 addr: fe80::223:5aff:fec9:2b13/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:5350587554 overruns:0 frame:0 TX packets:40 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:7511 (7.3 KiB) Interrupt:19 Base address:0x6000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:208 errors:0 dropped:0 overruns:0 frame:0 TX packets:208 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:16320 (15.9 KiB) TX bytes:16320 (15.9 KiB)

64 studio

  • Quentin Harley
  • 05/24/07
  • Thu, 02/16/2012 - 08:40
Hi Marcus, It could be that they have a lockdown on the number of connections on a certain share, and that either the Library PC, or your 64studio system can be online, but not both. Nothing else makes sense to me, because 64studio does not have any other time-based connection system that I know of. It either works, or it does not. Cheers, Quentin