How to remove a damaged Wired Connection

[Colin Law]

On 2 September 2016 at 12:37, Chas IRONS <ironscf at telkomsa.net> wrote:
>
> On Fri, 2016-09-02 at 08:04 +0100, Colin Law wrote:
>
> On 2 September 2016 at 07:12, Chas IRONS <ironscf at telkomsa.net> wrote:
>
> ...
> My wireless router DWR-730 would not switch off last night, so it was on
> this morning for me to run ifconfig -a
>
> The result was:
> chas at Charles-PC:~$ sudo ifconfig -a
> [sudo] password for chas:
> eth0      Link encap:Ethernet  HWaddr 10:c3:7b:6a:c5:ea
>           UP BROADCAST MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
>
> 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:65536  Metric:1
>           RX packets:1500 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1500 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1
>           RX bytes:111216 (111.2 KB)  TX bytes:111216 (111.2 KB)
>
> chas at Charles-PC:~$
>
> You see there is no entry for eth1 at all.
> I checked Menu bar/ Edit Connections and the entry is present and seems
> correct.
> So why is it not connected; just greyed out "Ethernet disconnected"?
> Then tried to reboot the router that showed: Firefox can't establish a
> connection to the server at 192.168.0.1.
> Physically switched off the router and on again so it rebooted and connected
> perfectly.
>
> *****************
>
> What do you mean it would not switch off?  If the router is behaving
> strangely then possibly it is the router that is faulty.
>
> Colin
>
> ********************
> Hi Colin
> My router probably does behave strangely but I don't know enough to diagnose
> and my ISP is also unresponsive. I am waiting for installation of fibre
> telecomms in a month or two before moving on.
>
> The DWR-730 has two buttons on the side. The top switch usually powers down
> with "BYE" message. Sometimes there is no response at all, so it stays on
> overnight.
> You probably think I should leave the router on always; but I don't like it
> being available for baddies in other time zones to target it. I live in +2
> zone.

What happens if you startup the PC, restart the router so everything
is working, then immediately reboot the PC?

Colin