|From:||Muhamad Ikhwan Ismail|
|Subject:||RE: [lwip-users] fixed IP and DCHP on the same net interface?|
|Date:||Tue, 16 Dec 2008 14:37:08 +0000|
I have this too, you can do this by writing into the netif ip address directly before starting dhcp (dhcp_start).
There is a bit of problem though, if the DHCP server offers an address equals to the static address and ,
and after offering does acheck through ARP, your device will answer and the
DHCP will fail..
Date: Tue, 16 Dec 2008 10:10:11 +0100
Subject: [lwip-users] fixed IP and DCHP on the same net interface?
I tested a network camera, which seems work in this way:
it has a DHCP client inside, which starts on power on. But until an IP from DHCP server is available, it answers on fixed ip (i.e. 192.168.1.3)
Can i do the same using lwip?
I tried to bring up an interface with fixed IP and after start DHCP, but it doesn't work: i didn't receive a new ip address from DHCP server.
I saw DHCP traffic using wireshark: in normal situation, DHCP client sends packet from 0.0.0.0 to broadcast, and the server answers, in my situation i have DHCP request from 192.168.1.3 to broadcast...
i suppose this could be the problem
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