这个探索可以使用称为“路由器通告”和“路由器请求”的ICMP讯息来完成。
This discovery can be accomplished using ICMP messages called Router Advertisements and Router Solicitations.
当电脑连接至网路时，可以传送“路由器请求”，要求路由器立即传送其通告，而不用等候接收“路由器通告”。
When a computer connects to a network, rather than waiting to receive router advertisements, it can send router Solicitations to request that routers send their advertisements immediately.
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