Reply to sender DHCP option
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United States of America Patent
Stats
-
Jul 1, 2003
Grant Date -
N/A
app pub date -
Feb 10, 1999
filing date -
Feb 10, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for replying to a DHCP request packet is provided which allows a DHCP server to forward its reply packet directly back to the requester, thus permitting a gateway or similar device to make a DHCP request on behalf of a client. A reply to sender options field in the DHCP request packet is used to signify when the reply packet should be sent directly back to the requester. The method includes: examining the reply to sender field; extracting an address from the giaddr field if a flag in the reply to sender field is not set; forwarding a reply packet to said address extracted from the giaddr field if the flag in the reply to sender field is not set and said giaddr field is not empty; broadcasting a reply packet over a local subnet if the flag in the reply to sender field is not set and said giaddr field is empty; extracting a source network address from the source network address field if the flag in the reply to sender field is set; and forwarding a reply packet to said source network address if the flag in the reply to sender field is set.
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