[lwip-users] Start DHCP from application thread not tcpip thread

[Fred39]

Hi Lwip-Users

I am trying to write a function which allows me to change between DHCP and
static Ip. This function will be in my application thread, so not in the
tcpip thread. I use the global variable netif netif_default defined in
netif.h and can set a static IP with the function
netif_set_addr(netif_default,&myIpAddr, &myNetMask, &myGateway). 
But when i try to use the function dhcp_start(netif_default) from my
application thread i see the DHCP Discover, DHCP Request and a ARP message
who has IP xxx.xxx.xxx.xxx via wireshark but the ip address will not be
assigned.

The options dhcp and static ip will be changed during system running thats
why i wanted to use this function in my application thread.

How can i realize this? And how to realize a link up down with the lwip
1.1.1 (cabel pluged in/out) ? I am using ecos as OS.


Regards Fred
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