[lwip-users] Problem w/ DHCP

[Bill Knight]

When the call to netif_is_up() was added in version 1.32 of ip_input() in ip.c,
I believe dhcp was broken in that it did not update NETIF_FLAG_UP in 
netif->flags.
It appears that calls to netif_set_up() and netif_set_down() should be added to
dhcp_bind() and dhcp_release() respectively.  I do not know if there should be
any modifications elsewhere.

Regards
-Bill Knight
the ARM Patch