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I have had a Networking problem over this past week that I hope someone here has the ability to resolve for me or can show me the procedure that I need to follow in order to resolve this problem myself.

PROBLEM: The problem is my inability to Ping or access my own Hostname. After a Fresh Boot of the System, this is the information that comes up when I attempt to ping my own Hostname.

ping -c 3 sevencardstud.dynaccess.com
PING sevencardstud.dynaccess.com (192.168.1.47) 56(84) bytes of data.
From sevencardstud (192.168.1.45) icmp_seq=1 Destination Host Unreachable
From sevencardstud (192.168.1.45) icmp_seq=2 Destination Host Unreachable
From sevencardstud (192.168.1.45) icmp_seq=3 Destination Host Unreachable
--- sevencardstud.dynaccess.com ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2015ms
pipe 3

I'm able to get to the Internet fine but no one can come into my system successfully. This System has been very stable and I have been running it for Months without any problems till this occured. This problem just came up after a normal re-boot of the System. I don't remember making any changes to my System prior to the Re-boot but that's not to say that I might not have screwed up something unintentially.

As a futher indication of this problem, I have a User written Server running in my system using port 7000 I have not been able to bring this Server up successfully ever since this Re_boot. I get the following error message from the bind command: Server Name= sevencardstud.dynaccess.com, Server Address= 192.168.1.47

bind: Cannot assign requested address
BIND ErrorProblem with the Server connecting to the Network

No changes have been made to this Server for over a year.

CONFIGURATION: My System is Ubuntu, Precise, 12.04. My Router/Modem is a Westell DSL 6100.

NETWORK COMMANDS: Following are the output of various Network related commands that I thought might be useful to anyone trying to help me with this problem. Any additional information that you would need, I will gladly supply.

The Westell 6100 Router address is 192.168.1.47

Command - host sevencardstud.dynaccess.com

sevencardstud.dynaccess.com has address 192.168.1.1

Command - ifconfig

   eth0      Link encap:Ethernet  HWaddr 00:1c:c0:ee:06:30  
             inet addr:192.168.1.45  Bcast:255.255.255.255  Mask:255.255.255.0
             inet6 addr: fe80::21c:c0ff:feee:630/64 Scope:Link
             UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
             RX packets:104 errors:0 dropped:0 overruns:0 frame:0
             TX packets:159 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:1000 
             RX bytes:11102 (11.1 KB)  TX bytes:18671 (18.6 KB)
             Interrupt:40 Base address:0x2000 
   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:4 errors:0 dropped:0 overruns:0 frame:0
             TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:0 
             RX bytes:240 (240.0 B)  TX bytes:240 (240.0 B)
   vmnet1    Link encap:Ethernet  HWaddr 00:50:56:c0:00:01  
             inet addr:172.16.73.1  Bcast:172.16.73.255  Mask:255.255.255.0
             inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
             UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
             RX packets:0 errors:0 dropped:0 overruns:0 frame:0
             TX packets:55 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:1000 
             RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
   vmnet8    Link encap:Ethernet  HWaddr 00:50:56:c0:00:08  
             inet addr:192.168.62.1  Bcast:192.168.62.255  Mask:255.255.255.0
             inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
             UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
             RX packets:0 errors:0 dropped:0 overruns:0 frame:0
             TX packets:56 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:1000 
             RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

Command - route

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         sevencardstud.d 0.0.0.0         UG    100    0        0 eth0
link-local      *               255.255.0.0     U     1000   0        0 eth0
172.16.73.0     *               255.255.255.0   U     0      0        0 vmnet1
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
192.168.62.0    *               255.255.255.0   U     0      0        0 vmnet8

Command - route -n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    100    0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth0
172.16.73.0     0.0.0.0         255.255.255.0   U     0      0        0 vmnet1
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.62.0    0.0.0.0         255.255.255.0   U     0      0        0 vmnet8

Command - traceroute sevencardstud.dynaccess.com

traceroute to sevencardstud.dynaccess.com (192.168.1.47), 30 hops max, 60 byte packets
 1  sevencardstud (192.168.1.45)  2999.270 ms !H  2999.268 ms !H  2999.264 ms !H

Command - arp

   Address                  HWtype  HWaddress           Flags Mask     Iface
   sevencardstud.dynaccess  ether   00:18:3a:2e:ce:d8   C              eth0

Command - sudo ufw status

Output - Status: inactive

NETWORK RELATED FILES: Here are various files relating to the Network

/etc/hostname

sevencardstud

/etc/hosts

127.0.0.1    localhost
192.168.1.47 sevencardstud.dynaccess.com sevencardstud

/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 192.168.1.1
nameserver 8.8.8.8
nameserver 8.8.4.4
search dynaccess.com

/etc/network/interfaces

auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
        dns-nameservers 8.8.8.8 8.8.4.4

I'm computer literate so any information or directions that someone gave me to solve this problem, I would be able to follow.

Any help that someone can give me, especially if there is a procedure that can be followed to lead to a solution, would be greatly appreciated.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

To anyone concerned,

I just want to give you the final results of my solving of this problem.

Ultimately, I had to make the following changes in /etc/network/interfaces I had to change from using dhcp to use static and then using information that I had gotten from the command "ifconfig eth0" I added the following parameters to /etc/network/interfaces

auto eth0 iface eth0 inet static address 192.168.1.47 netmask 255.255.255.0 gateway 192.168.1.1 network 192.168.1.0 broadcast 255.255.255.255 dns-nameservers 8.8.8.8 8.8.4.4

I don't know what changed on my system that would cause me to have to make these changes.

I think maybe something on my Network connection, which is with QWest, may have changed but I will never know for sure.

Any way, this is what I had to do to solve this problem.

I hope this information is of some use to someone here.

Thank you for who ever may have looked at this problem.

Yours truly,

Frank Krauss

share|improve this question
    
Have you powered the router on and off? I have seen weird access problems. –  Mitch Sep 4 '13 at 20:15
    
@Mitch Thanks for your reply –  Frank Krauss Sep 5 '13 at 23:13
    
I have turned off and on the router multiple times and the same with the Computer System itself. –  Frank Krauss Sep 5 '13 at 23:14

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