z/OS Communications Server: IPv6 Network and Application Design Guide
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Special IP addresses

z/OS Communications Server: IPv6 Network and Application Design Guide
SC27-3663-00

Like IPv4, IPv6 also defines loopback and wildcard (INADDR_ANY) addresses. The differences are shown in Table 1.
Table 1. Special IP addresses
  IPv4 IPv6
Loopback address 127.0.0.1 ::1 (15 bytes of zeros, 1 byte of 1)
Wildcard address 0.0.0.0 :: (16 bytes of zeros)
Multicast address 224.0.0.1 - 239.255.255.255 See Multicast IPv6 addresses
Parent topic: Design considerations

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