I fired up wireshark. Wireshark is able to capture all of the network chatter occurring on my lan from the other devices. There is a repeating dhcp discover associated with ip 0.0.0.0 which I assume to be the 42.3 machine. Still no address assigned to the 42.3 machine. On Mon, Oct 9, 2017 at 1:24 PM, Dave Smith <bushwacker551@gmail.com> wrote:
Here is the ifconfig-eth0 file. The only thing I find odd is the name given in the file. Not sure what the (2) is in there for, it would suggest there is a 1 somewhere but I have never found it. This system was literally a straight install with no glitches, a couple of updates, and then a network failure. I did not even look at the network until I no longer had it. Has me stumped.
On Mon, Oct 9, 2017 at 1:13 PM, Dave Smith <bushwacker551@gmail.com> wrote:
I have read all of your comments and here are a couple of things that I did not mention in my first post. Both the default gateway and nameserver are set to the router ip address. I am not even able to ping the router or any other device on the lan. With a static ip address ifconfig shows eth0 with the correct ip address. Using dhcp ifconfig shows eht0 with no ip address. While using dhcp it always times out and I get the message 'setup in progress'. I believe there was a kernel update in the last batch of updates. Could the e1000e module be broken. The computer acts like everything is okay with the network and is just waiting for a response from the router. The router on the other hand never receives any data from the computer. I will get the ifconif-eth0 file posted as soon as I can get it over to this computer. I have looked it over and see nothing different from the same file on the machine I am using now.
On Mon, Oct 9, 2017 at 11:45 AM, Anton Aylward <opensuse@antonaylward.com> wrote:
On 09/10/17 11:02 AM, Patrick Shanahan wrote:
I assign ip's to expected instruments, phone, tablet, laptops, and allow the router to assign addresses to "other" machines. wifi is just another connection different than wire.
While a good DHCP + DNS set-up can handle the dhcp telling the dns about devices, having static, predefined addresses for key devices like the printer, the router/gateway can simplify a lot of things about configuration and debugging.
It can also simplify ACLs. Personally I hate the idea of early binding ACLs but sometimes it is very useful.
I can tell my printer to refuse any device on the network that isn't my PC, my phone or or my laptop or my tablet. It is a simple security hack.
I'm sure Patrick can give other illustrations.
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