"In other words, an IP address is like a full address for postal mail while a MAC address is just the house number. For example, there are many addresses with a house number of 898 but there is only one address for 898 5th Ave, New York, NY United States . Simply mailing something to "898" will not get it there but "898 5th Ave, New York, NY, United States" is a globally unique address. "
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