how to change the time how long an IP stays in the Client list

[ahnernoch]

Hello,

I have an Asus N68U iwth Merlin Fork FW.

Is there a way to change the time how long an Ip stays in the Client DHCP table when the device is offline? When my Pc goes oflline the IP stays a really long time inside. I want to put this time down to 1 minute maybe. Is there a way to do this? Tanks in advance....

 

[RMerlin]

Entries on the DHCP list will remain there until the lease expires. There's no way around it, it's how DHCP works.

 

[octopus]

If you use Windows a trick may work, is to force client to disconnect when shut down.

dhcp-option=vendor:MSFT,2,1i

Send microsoft-specific option to tell windows to release the DHCP lease
# when it shuts down. Note the "i" flag, to tell dnsmasq to send the
# value as a four-byte integer - that's what microsoft wants. See
# http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true
#dhcp-option=vendor:MSFT,2,1i

 

[john9527]

If you use Windows a trick may work, is to force client to disconnect when shut down.

dhcp-option=vendor:MSFT,2,1i

That's pretty nifty. Do you know if other values are supported for the vendor id?

 

[szdaisy0228]

 

[octopus]

That's pretty nifty. Do you know if other values are supported for the vendor id?

No I don't know.

 

[unsynaps]

If you use Windows a trick may work, is to force client to disconnect when shut down.

dhcp-option=vendor:MSFT,2,1i

Send microsoft-specific option to tell windows to release the DHCP lease
# when it shuts down. Note the "i" flag, to tell dnsmasq to send the
# value as a four-byte integer - that's what microsoft wants. See
# http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true
#dhcp-option=vendor:MSFT,2,1i

http://www.ingmarverheij.com/microsoft-vendor-specific-dhcp-options-explained-and-demystified/

MSFT is old. You will want to use MSFT 5.0

EDIT: Nevermind. Found another document that says this: "
(A substring match is OK, so "MSFT"
# matches "MSFT" and "MSFT 5.0")"