|
|
Post by bittwiddler on May 6, 2019 20:36:28 GMT
I have long used the DHCP static mapping section for servers which use DHCP but really should have persistent IP addresses. I usually do that for machine running ClearCase.
I am trying to create a mapping and I am getting this error: "Static IP addresses may not lie within the dynamic client range."
My understanding was that was the point. To make the DHCP issued IP address associated with a MAC address "sticky".
Is this a bug or am I completely misunderstanding this feature?
Thanks!
|
|
|
|
Post by Lee Sharp on May 6, 2019 21:10:48 GMT
It is the way it works. Essentially, all static maps need to be outside the normal range because of the way the underlying software is written. It also forces you to keep your DHCP range clean.  But mainly it is because trying to make in scope reservations is not clean... At least I could not find a clean way to do it. |
|
|
|
Post by bittwiddler on May 6, 2019 21:22:00 GMT
Hmmmm...(scratching head)...I have a series of existing entries which are in the DHCP range. I must have put them in years ago under who knows what version of m0n0nwall. If I understand you correctly, the persistent (static?) DHCP addresses are still DHCP but outside of the range defined in the DHCP server settings?
As a sanity check, I will release the DHCP lease and power down the server in question, and then try again.
I need to start taking better notes!
|
|
|
|
Post by Lee Sharp on May 6, 2019 23:29:24 GMT
If I had a nickel for everything thing I forgot I would have ... Uh... What were we talking about again? But yes, if your scope is 192.168.1.100-200 than the statics would be in the 2-99 range. I use the top of the scope for VPN addresses. If it is working otherwise and working correctly, I am not sure how! |
|
|
|
Post by bittwiddler on May 7, 2019 17:52:21 GMT
> If it is working otherwise and working correctly, I am not sure how! That makes two of us. Like I said, those settings where there for a long time. I will root cause this weekend and follow up here. I won't be able to down the server until then. |
|
But mainly it is because trying to make in scope reservations is not clean... At least I could not find a clean way to do it.