libpcap - Dump wol frame and datagram(17)

WOL（Wake-on-LAN）網路喚醒封包，現在大多數網卡在關機狀態的時候，能夠以低電量方式接收wol封包，一旦收到就可以讓電腦開機。

一般都是屬於layer 2的協定，type是0x0842，WOL也可以透過UDP走在WAN上。

執行結果：

libpcap % ./dump-wol 
Sniffing: en0
6c:40:08:bc:ae:98 -> ff:ff:ff:ff:ff:ff
+-------------------------+-------------------------+-------------------------+
| Sync stream:                                                    ffffffffffff|
+-------------------------+-------------------------+-------------------------+
| MAC Address:                                               a0:d7:95:b7:22:2f|
+-------------------------+-------------------------+-------------------------+
| Password:                                                  00:00:00:00:00:00|
+-------------------------+-------------------------+-------------------------+

Source code on Github