[CentOS] CentOS 7, NM, and IPv6

[Gordon Messmer]

On 07/12/2017 04:22 PM, mark wrote:
> On 07/12/17 12:09, Gordon Messmer wrote:
>> On 07/12/2017 07:13 AM, m.roth at 5-cent.us wrote:
>>>     4. It appears to try, several times, and then give up - as our
>>>         manager puts it, "I to renew the lease", "Here it is","Nope,
>>>         don't like that, try again", and eventually, after 4 or 5 or
>>>         so tries, gives up.
>>
> Next, there is *nothing*, not in dmesg*, not in /var/log/messages, to 
> indicate when it failed, nor any failure message. No indication why 
> the daemon didn't restart it. 


Where did your manager observe the conversation you described above?  If 
you're watching traffic at the DHCP server, have you tried also 
capturing traffic on one of the affected clients?