Thursday, August 05, 2021

Re: How to troubleshoot DHCP issues?

> My first suggestion might be to stay with a single lladdr for a
> while to see if your setup works for more than a day and a half.

Thanks for the suggestion!
It seems that with `lladdr random` removed, the problem does not
seem to disappear.

>>> lladdr random
>>
>> Why this line?
>
> I was wondering the same thing. What problem do you think you are
> solving by doing this?

I try to make it harder for my ISP to gather information about the
device I'm using, thus was using random MAC address.


> The "random" lladdr catches my eye. But I don't know how
> frequently that changes. Could it change every time the lease
> is renewed?

Skimming through the code for dhcpleased, looks like there's no
invocation of the SIOCSIFLLADDR ioctl, so I would assume that the
lladdr stays the same unless the netstart script is re-run (thus
invoking ifconfig to change lladdr), but I will to test that to
make sure.

It smells of a bug somewhere... I mean, as long as the lladdr does
not change in the middle of the lease, then the router should have
been able to successfully obtain a new IP address, right?

Best Regards

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