Re: [lwip-users] Enabling DHCP option 50

[Simon Goldschmidt]

cookies_do wrote:
> I am using lwIP 2.0.3 in my application and I want to enable DHCP option 50
> (Requested IP Address) according to RFC 2132 document (chapter 9.1). This
> option should be set in DISCOVER message.
> 
> Is it enough to concatenate an option type and length field to the outgoing
> DHCP message in dhcp_discover() function in lwIP like this:
> 
> options_out_len = dhcp_option(options_out_len, msg_out->options,
> DHCP_OPTION_REQUESTED_IP, 4);
> options_out_len = dhcp_option_long(options_out_len, msg_out->options,
> lwip_ntohl(requested_ip_hex));
> 
> Anybody has an idea?

I'm not sure I understand your problem. Have you tried and failed?

Simon