Re: [gentoo-user] Re: losing network IP address

Thelma
On 03/21/2017 01:25 PM, Kai Krakow wrote:
> Am Tue, 21 Mar 2017 11:08:49 -0600
> schrieb thelma@×××××××××××.com:
>
>> On 03/21/2017 10:21 AM, Ian Zimmerman wrote:
>>> On 2017-03-21 06:59, thelma@×××××××××××.com wrote:
>>>
>>>> Sometimes it does, the IP stays for a several days but sometimes it
>>>> boots with correct IP and the IP changes after few hours to
>>>> something like 192.168.xxx (which is not what my firewall
>>>> provides.)
>>>
>>> Maybe you have another (misconfigured) DHCP server on the network?
>>> tcpdump could be your friend.
>>
>> The only strange entries I see in message logs are:
>>
>>  eden dbus[3276]: [system] Activating service
>> name='org.freedesktop.UDisks2' (using servicehelper) eden
>> udisksd[4067]: udisks daemon version 2.1.8 starting eden dbus[3276]:
>> [system] Successfully activated service 'org.freedesktop.UDisks2'
>> eden udisksd[4067]: Acquired the name org.freedesktop.UDisks2 on the
>> system message bus eden apcupsd[2864]: Communications with UPS lost.
>> eden postfix/pickup[3665]: 2BC8520064: uid=0
>> from=<root@××××.localdomain> eden postfix/cleanup[4174]: 2BC8520064:
>> message-id=<20170321045940.2BC8520064@××××.localdomain> eden
>> postfix/qmgr[3666]: 2BC8520064: from=<root@××××.localdomain>,
>> size=924, nrcpt=1 (queue active) eden postfix/cleanup[4174]:
>> 7C18420023: message-id=<20170321045940.2BC8520064@××××.localdomain>
>> eden postfix/qmgr[3666]: 7C18420023: from=<root@××××.localdomain>,
>> size=1057, nrcpt=1 (queue active) eden postfix/local[4180]:
>> 2BC8520064: to=<root@××××.localdomain>, relay=local, delay=0.59,
>> delays=0.32/0.21/0/0.05, dsn=2.0.0, status=sent (forwarded as
>> 7C18420023) eden postfix/qmgr[3666]: 2BC8520064: removed eden
>> postfix/smtp[4184]: 7C18420023: to=<thelma@×××××××××××.com>,
>> orig_to=<root@××××.localdomain>, relay=none, delay=0.13,
>> delays=0.05/0.08/0/0, dsn=4.4.3, status=deferred (Host or domain name
>> not found. Name service error for name=mail.sys-concept.com type=MX:
>> Host not found, try again)
>
> What's strange about these logs?
>
>> This must be from "apcupsd"
>> Could this service causes some problem with my network?
>
> That service is only victim of the IP address changing. It's not the
> source of the problem.
>
>> Shortly after I could not receive any message from the system, I
>> think the network connection got lost. --
>
> You wrote that this happened in different locations, I guess you mean
> different networked sites with each their own DHCP server.
>
> So, I my best guess is that you're running a local DHCP server by
> accident.
>
> Which service does configure your network?
>
> If it's systemd-networkd, you could check those logs after the problem
> occurred:
>
> # journalctl -b -u systemd-networkd.service | fgrep -i dhcpv4
>
> Apparently, it doesn't tell you what the DHCP server is by MAC address,
> but the reported "via" at least tells you the IP.
>
> It looks like this:
>
> Mar 17 19:21:33 jupiter systemd-networkd[680]: enp5s0: DHCPv4 address 192.168.4.102/24 via 192.168.4.254
>
> Other network management daemons should log similar lines. Try first
> without fgrep.

I run DHCP on my DD-WRT router, and all the boxes are running OK, except this one. The IP the box suppose to get is: 10.10.0.7 (static IP ) and here is an entry from last night long:

 eden dhcpcd[7478]: net0: adding address fe80::a98a:8875:2106:64bc
 eden dhcpcd[7478]: DUID 00:01:00:01:1a:bc:bc:ca:00:30:18:ad:ed:b4
 eden dhcpcd[7478]: net0: IAID 18:ad:ed:b4
 eden dhcpcd[7478]: net0: soliciting an IPv6 router
 eden dhcpcd[7478]: net0: soliciting a DHCP lease
 eden dhcpcd[7478]: net0: probing for an IPv4LL address
 eden dhcpcd[7478]: net0: using IPv4LL address 169.254.156.68
 eden dhcpcd[7478]: net0: adding route to 169.254.0.0/16

I could suspect the cable but I use two different cable in two different location on same network and same thing happens.
I took that box home and it hang up on me in the morning.  
I've already ordered a replacement.  The only reason I was sticking to it as it is already configured for my hylafax, asterisk.

--
Thelma