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Address Reservation not working/ being ignored
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Hi all,
I am having an issue where I have reserved an IP address (192.168.1.2) for MAC (B8:27:EB:A1:BA:F5), but whenever that particular device is connected, it just gets assigned an IP address from the pool (i.e. 192.168.1.8). I'm sure I'm doing something wrong - I just can't figure out what!
Use Router as DHCP Server is ticked:
The Starting IP Address is 192.168.1.3
The Ending IP Address is 192.168.1.254
There is only one device in the Address Reservation Table:
192.168.1.2 => B8:27:EB:A1:BA:F5
However, the device appears in the Attached Devices table like this:
192.168.1.8 => B8:27:EB:A1:BA:F5
This is not what I want - I want it to be assigned the reserved address
Side note - I have rebooted and reset both my router (R7000, V1.0.9.64_10.2.64) and the device itself.
And help would be greatly appreciated 😄
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> [...] (R7000, V1.0.9.64_10.2.64) [...]
That may not be the most popular firmware version. Have you tried
any other (older) firmware version(s)?
I have no recent experience with address reservation on an R7000, so
I know nothing, but your description looks good to me.
> [...] I have reserved an IP address (192.168.1.2) for MAC
> (B8:27:EB:A1:BA:F5), [...]
A Raspberry Pi? (Which?) Wired or wireless interface? (Each should
have its own MAC address.) And it's using DHCP, not a static address
(for that interface)?
> [...] but whenever that particular device is connected, it just gets
> assigned an IP address from the pool (i.e. 192.168.1.8). [...]
Always the same, or variable, depending on what else is connected?
Is some other device camped on "192.168.1.2"?
> [...] I'm sure I'm doing something wrong - I just can't figure out
> what!
I'd say that it's probable, but I don't see it (yet), either.
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> [...] (R7000, V1.0.9.64_10.2.64) [...]
That may not be the most popular firmware version. Have you tried
any other (older) firmware version(s)?
I have no recent experience with address reservation on an R7000, so
I know nothing, but your description looks good to me.
> [...] I have reserved an IP address (192.168.1.2) for MAC
> (B8:27:EB:A1:BA:F5), [...]
A Raspberry Pi? (Which?) Wired or wireless interface? (Each should
have its own MAC address.) And it's using DHCP, not a static address
(for that interface)?
> [...] but whenever that particular device is connected, it just gets
> assigned an IP address from the pool (i.e. 192.168.1.8). [...]
Always the same, or variable, depending on what else is connected?
Is some other device camped on "192.168.1.2"?
> [...] I'm sure I'm doing something wrong - I just can't figure out
> what!
I'd say that it's probable, but I don't see it (yet), either.
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Re: Address Reservation not working/ being ignored
> [...] And it's using DHCP, not a static address
> (for that interface)?
This was it! I went to
cat /etc/network/interfaces
which had nothing in it. I then went to
cat /etc/dhcpcd.conf
which showed that it was using a static IP.
What would be your suggestion? Change the static IP to 192.168.1.2 or change it to DHCP?
Thank you for your help!
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Re: Address Reservation not working/ being ignored
> [...] What would be your suggestion? Change the static IP to
> 192.168.1.2 or change it to DHCP? [...]
Your choice. Around here, I have many systems with static addresses,
mostly old stuff where DHCP is not supported (well or at all). I also
have others with reserved dynamic addresses, mostly newer stuff, and/or
devices like printers or Internet-of-Junk gizmos, which don't have
convenient user interfaces (keyboard+display). My DHCP pool is pretty
small (16), and its only customer at the moment is a Roku box.
For a portable device, like, say, a laptop computer, DHCP makes much
more sense. The question is whether you want to do your management on
the individual device(s) or on the router (DHCP server).
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