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The number of bits of the network prefix are separated with a slash / or percent sign %
For example,
2001:cdba:9abc:5678::/64
denotes the network address 2001:cdba:9abc:5678. Such network comprises of host addresses in range from
2001:cdba:9abc:5678::
to
2001:cdba:9abc:5678:ffff:ffff:ffff:ffff
In a similar fashion, a single host may be denoted as a network with a 128-bit prefix. In this way, IPv6 allows a network to comprise of a single host and above.
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