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Hi.
Looking at my router diagnostics yesterday, I noticed an unfamiliar MAC address in the list of assigned DHCP IP addresses.
After a while I realised that my Foxsat HDR had grabbed a DHCP IP address from the router, even though I have given it a fixed IP address, and the fixed IP is the one it is actually using.
Is this is a bug? It is not a huge issue for me, but it is nevertheless wrong and I imagine it could cause problems for some people.
Regards.
Reginald,
It is possible that your HDR had obtained an IP address using DHCP before you gave it a fixed one. Once an address is allocated by DHCP it can be ‘held’ for a period so it isn’t available for other clients. This is called the lease time. What’s the lease time on the router DHCP set up ?
I normally prefer pre-allocating a IP to a MAC address in the router settings rather actually setting the client to a fixed ip.
Your router will then also ensure that the setting is correct and not duplicated.
Did you check that the MAC is indeed the Foxsat’s and not someones phone for example?
That’s a good thought, dino.
However, I only enabled the DHCP server on my router for the first time a few days ago, for use with a particular device. The HDR was set with a static IP over a month ago, and hasn’t been touched since.
I’m not going to lose any sleep over it, but it would be nice to know if anyone else has noticed this, and what the reason might be. I can’t check my router right now, but maybe the lease time will give me an idea of when the IP address was given out.
Reginald.
REPASSAC – 14 minutes ago »
I normally prefer pre-allocating a IP to a MAC address in the router settings rather actually setting the client to a fixed ip.
Your router will then also ensure that the setting is correct and not duplicated.
Did you check that the MAC is indeed the Foxsat’s and not someones phone for example?
I checked the MAC – it is definately the Foxsat. To be honest, I’ve never really needed to use the method you suggest on my home network before. I may look into it.
Regards.
Just checked my routers client list and same symptoms as Reginald, i.e. an entry for the MAC of the HDR in the DHCP client list even though it has (and is using a static IP) outside the DHCP scope.
Going to have to get the sniffer out.
Dino
Looks like the HDR starts down the DHCP path before it deploys its static address.
Set HDR into standby.
Cleared DHCP client list on router.
Booted HDR
Router received a DHCP discover from HDR
Router responded with DHCP offer
HDR sent a DHCP request
Router sent a DHCP ack
Then the HDR began using the static IP, leaving the router with a duff entry in its DHCP client list.
You know, I was going to suggest that is what might be happening, but you have just proved it.
Thanks for the info.
Reginald.
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