For those of you who already know how to read a UDP packet header, chapter 3 is your starting point.
如果你已经知道如何解读UDP包的头，不妨从第三章开始。
Dedicated packet triggering allows triggering on the ENTIRE packet header plus up to 9 bytes of data.
专用的封包触发可在整个封包标题触发，外加最多9个位元组的资料。
The router updates its cache, installs the new MAC address into the packet header and launches the packet.
路由器因此更新高速缓存，把新的MAC地址装进包的报头并发送该包。
The router updates its cache, installs the new MAC address into the packet header and launches the packet.
路由器因此更新高速缓存，把新的MAC地址装进包的报头并发送该包。
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