[SFS] Ubuntu server with 2 IP addresses

[Corey]

Hi Mr. Willson -

Yes, it is persistant thru a reboot.

Ip address delete removes both of them (even if I just specify the
dynamic IP), but a reboot restores them both.

I have joined MatterMost as "n3rDy".

Thanks

Corey

On 10/11/17, David L. Willson <DLWillson@thegeek.nu> wrote:
> Does it persist through a reboot?
>
> Does the undesired address come off, and stay off (for a long time), if you
> 'ip address delete (it)'?
>
> It seems like this might take a few rounds of Q & T & A ... Maybe you should
> come hang out with us in MatterMost:
> https://mattermost.sofree.us/signup_user_complete/?id=brmczfxbrjr15ggn7rwtpwgthy
>
> --
> David L. Willson
> Teacher, Engineer, Evangelist
> COA LFCS CCAH RHCE CLP
> Mobile 720-333-LANS(5267)
> http://sofree.us
>
> This is a good time for a r3VOLution.
>
> ----- Original Message -----
>> Hopefully this message will get to everybody, I think I sent it to
>> the
>> right address . . . if not would somebody forward it to the brain
>> trust for me?
>>
>> Thanks in advance for any advice and or sarcasm offered ;-)
>>
>> I have an issue with an Ubuntu server that I just upgraded from 14.04
>> to 16.04 using the do-release-upgrade command. I know it is not
>> ideal,
>> but this was preferred over a clean install. Everything seemed to go
>> well, but now eth0 has 2 IP addresses, 1 dynamic (I don't need or
>> want) and 1 static, which is the actual one that I want. They are
>> both
>> working fine and I can SSH to the server on either address. How can I
>> turn off the 1 dynamic address?
>>
>> Here is my interfaces file:
>>
>> # The loopback network interface
>> auto lo
>> iface lo inet loopback
>>
>> # The primary network interface
>> auto eth0
>> iface eth0 inet static
>>         address 10.0.1.211
>>         netmask 255.255.255.0
>>         network 10.0.1.0
>>         broadcast 10.0.1.255
>>         gateway 10.0.1.254
>>         dns-nameservers 10.0.1.2 10.0.1.22
>>
>> Here is the result of "ip a", notice it shows both addresses, but
>> "ifconfig" that follows it only shows the dynamic one:
>>
>> srv:~$ ip a
>> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
>> group default
>>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>>     inet 127.0.0.1/8 scope host lo
>>        valid_lft forever preferred_lft forever
>>     inet6 ::1/128 scope host
>>        valid_lft forever preferred_lft forever
>> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
>> group default qlen 1000
>>     link/ether 00:50:56:85:7a:60 brd ff:ff:ff:ff:ff:ff
>>     inet 10.0.1.64/24 brd 10.0.1.255 scope global dynamic eth0
>>        valid_lft 258240sec preferred_lft 258240sec
>>     inet 10.0.1.211/24 brd 10.0.1.255 scope global secondary eth0
>>        valid_lft forever preferred_lft forever
>>     inet6 fe80::250:56ff:fe85:7a60/64 scope link
>>        valid_lft forever preferred_lft forever
>>
>>
>> srv:~$ ifconfig
>> eth0      Link encap:Ethernet  HWaddr 00:50:56:85:7a:60
>>           inet addr:10.0.1.64  Bcast:10.0.1.255  Mask:255.255.255.0
>>           inet6 addr: fe80::250:56ff:fe85:7a60/64 Scope:Link
>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>           RX packets:4454 errors:0 dropped:0 overruns:0 frame:0
>>           TX packets:348 errors:0 dropped:0 overruns:0 carrier:0
>>           collisions:0 txqueuelen:1000
>>           RX bytes:415570 (415.5 KB)  TX bytes:63700 (63.7 KB)
>>
>> 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:333 errors:0 dropped:0 overruns:0 frame:0
>>           TX packets:333 errors:0 dropped:0 overruns:0 carrier:0
>>           collisions:0 txqueuelen:0
>>           RX bytes:55712 (55.7 KB)  TX bytes:55712 (55.7 KB)
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>