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<div class="title">dhcp.h</div> </div>
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<a href="../../d0/d51/dhcp_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Copyright (c) 2001-2004 Leon Woestenberg <leon.woestenberg@gmx.net></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * Copyright (c) 2001-2004 Axon Digital Design B.V., The Netherlands.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * 3. The name of the author may not be used to endorse or promote products</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * Author: Leon Woestenberg <leon.woestenberg@gmx.net></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#ifndef LWIP_HDR_DHCP_H</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#define LWIP_HDR_DHCP_H</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#include "<a class="code" href="../../dc/dba/opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#if LWIP_DHCP </span><span class="comment">/* don't build if not configured for use in lwipopts.h */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "<a class="code" href="../../d9/d69/netif_8h.html">net/netif.h</a>"</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#include "<a class="code" href="../../d2/da7/udp_8h.html">net/udp.h</a>"</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#define DHCP_COARSE_TIMER_SECS 60</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#define DHCP_COARSE_TIMER_MSECS (DHCP_COARSE_TIMER_SECS * 1000UL)</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#define DHCP_FINE_TIMER_MSECS 500</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#define DHCP_BOOT_FILE_LEN 128U</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">/* AutoIP cooperation flags (struct dhcp.autoip_coop_state) */</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">typedef</span> <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  DHCP_AUTOIP_COOP_STATE_OFF = 0,</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  DHCP_AUTOIP_COOP_STATE_ON = 1</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> } dhcp_autoip_coop_state_enum_t;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">struct </span>dhcp</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> xid;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">struct </span><a class="code" href="../../d1/dab/structdhcp__msg.html">dhcp_msg</a> *msg_in;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pcb_allocated;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> state;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tries;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#if LWIP_DHCP_AUTOIP_COOP</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> autoip_coop_state;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> subnet_mask_given;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">struct </span><a class="code" href="../../d9/db8/structpbuf.html">pbuf</a> *p_out; <span class="comment">/* pbuf of outcoming msg */</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">struct </span><a class="code" href="../../d1/dab/structdhcp__msg.html">dhcp_msg</a> *msg_out; <span class="comment">/* outgoing msg */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> options_out_len; <span class="comment">/* outgoing msg options length */</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> request_timeout; <span class="comment">/* #ticks with period DHCP_FINE_TIMER_SECS for request timeout */</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> t1_timeout; <span class="comment">/* #ticks with period DHCP_COARSE_TIMER_SECS for renewal time */</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> t2_timeout; <span class="comment">/* #ticks with period DHCP_COARSE_TIMER_SECS for rebind time */</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> t1_renew_time; <span class="comment">/* #ticks with period DHCP_COARSE_TIMER_SECS until next renew try */</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> t2_rebind_time; <span class="comment">/* #ticks with period DHCP_COARSE_TIMER_SECS until next rebind try */</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> lease_used; <span class="comment">/* #ticks with period DHCP_COARSE_TIMER_SECS since last received DHCP ack */</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> t0_timeout; <span class="comment">/* #ticks with period DHCP_COARSE_TIMER_SECS for lease time */</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> server_ip_addr; <span class="comment">/* dhcp server address that offered this lease (ip_addr_t because passed to UDP) */</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  ip4_addr_t offered_ip_addr;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ip4_addr_t offered_sn_mask;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  ip4_addr_t offered_gw_addr;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> offered_t0_lease; <span class="comment">/* lease period (in seconds) */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> offered_t1_renew; <span class="comment">/* recommended renew time (usually 50% of lease period) */</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> offered_t2_rebind; <span class="comment">/* recommended rebind time (usually 87.5 of lease period) */</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor">#if LWIP_DHCP_BOOTP_FILE</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  ip4_addr_t offered_si_addr;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">char</span> boot_file_name[DHCP_BOOT_FILE_LEN];</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_BOOTPFILE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> };</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="keywordtype">void</span> dhcp_set_struct(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>, <span class="keyword">struct</span> dhcp *dhcp);</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#define dhcp_remove_struct(netif) netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, NULL)</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keywordtype">void</span> dhcp_cleanup(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_start(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_renew(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_release(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="keywordtype">void</span> dhcp_stop(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="keywordtype">void</span> dhcp_inform(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="keywordtype">void</span> dhcp_network_changed(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor">#if DHCP_DOES_ARP_CHECK</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="keywordtype">void</span> dhcp_arp_reply(<span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>, <span class="keyword">const</span> ip4_addr_t *addr);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dhcp_supplied_address(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d2/dd6/structnetif.html">netif</a>);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">/* to be called every minute */</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keywordtype">void</span> dhcp_coarse_tmr(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">/* to be called every half second */</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keywordtype">void</span> dhcp_fine_tmr(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor">#if LWIP_DHCP_GET_NTP_SRV</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="keyword">extern</span> <span class="keywordtype">void</span> dhcp_set_ntp_servers(<a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> num_ntp_servers, <span class="keyword">const</span> ip4_addr_t* ntp_server_addrs);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_GET_NTP_SRV */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor">#define netif_dhcp_data(netif) ((struct dhcp*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP))</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> }</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor">#endif </span><span class="comment">/*LWIP_HDR_DHCP_H*/</span><span class="preprocessor"></span></div>
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