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Re: [lwip-users] DHCP and AutoIp parallel triggered

From: Zach Smith
Subject: Re: [lwip-users] DHCP and AutoIp parallel triggered
Date: Fri, 21 Mar 2014 17:18:50 +0000

I’m not sure about what the specification says but that is what LwIP does. Once the auto ip address is obtained it continues to send DHCP discover messages periodically and the source address is the auto ip address.


From: lwip-users-bounces+address@hidden [mailto:lwip-users-bounces+address@hidden On Behalf Of Sandeep Parvatikar
Sent: Thursday, March 20, 2014 12:04 PM
To: Mailing list for lwIP users
Subject: [lwip-users] DHCP and AutoIp parallel triggered



I have a doubt w.r.t parallel triggering of DHCP and AutoIp IPv4 address assignment methods.

When both these IP address assignment are triggered parallel and if the DHCP server response is slow...AutoIp is assigned to my NIC. But now I want to continue transmitting DHCP DISCOVER frames.

In this scenario what should be the IP source address in the DHCP frames. I could not find anything mentioned regarding this in the RFCs.

Is it ok if the DHCP DISCOVER frames have AutoIp address in IPv4 source address field?

Note: I have my own lean TcpIp stack and not lwip.


- Sandeep

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