[mdlug] Static IP behind NAT with Xfinity

[R Kannan]

I finally gave up on finding out where the static IP is set on my 
desktop and switched the router DHCP IP range to match the static IP set 
in my desktop and it seems to be working.

But I still would like to find out where I had set my static IP on my 
desktop :-(       Don't like mysteries except in a book !!

On 8/5/20 4:38 PM, Gib wrote:
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>
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>
>
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> On Wed, Aug 5, 2020 at 2:31 PM R KANNAN <rk111810 at gmail.com> wrote:
>
>>   This could be a debian twist.  I did a search for the static IP address on
>> all files and found a file under ./NetworkManager/system-connections with
>> the same name as my old router SSID
>>
>> According to this link.
>>
>>
>> https://wiki.debian.org/NetworkManager#:~:text=NetworkManager%20keeps%20connection%20information%20on,man%20nm%2Dsettings%20or%20online
>> .
>>
>> this file "NetworkManager will only handle interfaces not declared in
>> /etc/network/interfaces."
>> This file seems to have all information on the router and internet service
>> such as DNS etc.
>>
>> I did not manually create this file. Looks like somehow it got created and
>> is working. I will investigate further tonight.
>>
>> On 8/5/20 9:55 AM, R Kannan wrote:
>>
>> Cannot find this file...
>>
>> root at HP-DVR:~# cd /etc
>> root at HP-DVR:/etc# ls -l dhcpcd.conf
>> ls: cannot access dhcpcd.conf: No such file or directory
>> root at HP-DVR:/etc# ls -l /etc/dhcpcd.conf
>> ls: cannot access /etc/dhcpcd.conf: No such file or directory
>> root at HP-DVR:/etc# cd /etc
>> root at HP-DVR:/etc# find . -name dhcpcd.conf
>> root at HP-DVR:/etc#
>>
>>
>> Thanks
>>
>> On 8/5/20 9:12 AM, Jay Nugent wrote:
>>
>> Greetings,
>>
>> On Wed, 5 Aug 2020, R KANNAN wrote:
>>
>> Thanks. I did follow the instructions but as I said in my previous email, I
>> do not see static IP being set in the */etc/network/interfaces *file. There
>> is no reference to eth0 at all in the file.  Only the loop back.
>>
>>
>>
>>     /etc/network/interfaces has been depricated and no longer used.  Leave
>> it to the snot-nosed pimply-faced kids to mess up a good thing and make
>> changes that are unneccesary :(
>>
>>     Newer distros are now favoring /etc/dhcpcd.conf as the place to edit
>> static addresses.  Also now some ding-dong decided that ETH0 was not a
>> "predictable" interface name and think that "enxb827ebe0583e" is *more*
>> predictable because it contains the MAC address of the interface.  DUH!
>>
>>     On Rasperian that is easily changed back to ETH0 using the raspi-config
>> tool (from the command line, NOT the GUI).  How you do it in other distros,
>> I'm not sure...
>>
>>
>>     Here is my snippet of code in /etc/dhcpcd.conf where I set a statis IP
>> on my ethernet interface:
>>
>> #
>> # sudo raspi-config
>> #  N2 Network
>> #     "Predictable Interface Names" should be set to NO
>> #
>> # Static IP configuration:
>> #  Modified JJN 20200712
>> #
>> interface eth0
>> ###interface enxb827ebe0583e
>> static ip_address=23.115.92.205/29
>> ###static ip6_address=fd51:42f8:caae:d92e::ff/64  <--- static IPv6
>> static routers=23.115.92.206
>> static domain_name_servers=23.115.92.201
>> ### .... 8.8.8.8 fd51:42f8:caae:d92e::1  <--- IPv6 DNS server
>>
>>
>>     Hope this helps!
>>
>>        --- Jay Nugent  WB8TKL
>>
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