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IPv6 Part 2

IPv6 Part 2. Unique Local Unicast Addresses. FC00::/7. Bogons. These addresses are unallocated or reserved and should not be used on the Internet These are impossible 6to4 addresses (2200: followed by non-routable IPv4 addresses)

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IPv6 Part 2

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  1. IPv6 Part 2

  2. Unique Local Unicast Addresses FC00::/7

  3. Bogons • These addresses are unallocated or reserved and should not be used on the Internet • These are impossible 6to4 addresses (2200: followed by non-routable IPv4 addresses) • 2002:e000::/19 Class D & E2002:7f00::/24 Loopback2002:0000::/24 0.0.0.0/82002:ff00::/242002:0a00::/242002:ac10::/282002:c0a8::/32

  4. More Bogons • These addresses are unallocated or reserved and should not be used on the Internet • fe80::/10fec0::/10fc00::/7ff00::/82001:db8::/323ffe::/16

  5. Credits • Many slides were from: • IPv6: What, Why, How • openwall.com/presentations/IPv6 • Bogon list from • The Incredible Shrinking Bogon List • http://www.networkworld.com/community/blog/incredible-shrinking-bogon-list

  6. iClicker Questions

  7. IPv4 Class A addresses go from 0.0.0.0 – 127.255.255.255. What is the correct specification for this address range? 0.0.0.0/0 0.0.0.0/1 0.0.0.0/2 0.0.0.0/4 Something else

  8. Solution 0.0.0.0 and 127.255.255.255 in binary: 00000000 00000000 00000000 00000000 01111111 11111111 11111111 11111111 Number of bits that match: 1 This network is 0.0.0.0/1

  9. IPv4 Class D addresses go from 224.0.0.0 – 239.255.255.255. What is the correct specification for this address range? 224.0.0.0/2 224.0.0.0/3 224.0.0.0/4 224.0.0.0/5 Something else

  10. The ULAs are FC00::/7. What is the largest ULA (Unique Local Address)? FCFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FDFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FEFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF Something else

  11. Solution • FC00::/7 • 1111 1100 0000 0000 0000 … --1stAddr • 1111 1101 1111 1111 1111 … --Last Addr • Last address is • FDFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF

  12. The Link-Local addresses are FE80::/10. What is the largest Link-Local address? FE8F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FE9F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FEBF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FEFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF Something else

  13. Solution • FE80::/10 • 1111 1110 1000 0000 0000 … --1stAddr • 1111 1110 1011 1111 1111 … --Last Addr • Last address is • FEBF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF

  14. This address range is reserved for documentation and debate: 2001:db8::/32. What is the largest address in that range? 2001:DB8:0:0:ffff:ffff:ffff:ffff 2001:DB8:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF 2001:DB8F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF 2001:DBF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF Something else

  15. The Multicast addresses are FF00::/8. What is the largest Multicast address? FF00:0:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FF00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FF0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF Something else

  16. These are unroutable 6to4 addresses: 2002:e000::/19. What is the largest address in this range? 2002:E000:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF 2002:E00F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF 2002:E0FF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF 2002:EFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF Something else

  17. Solution • 2002:e000::/19 • 0010 0000 0000 0010 1110 0000 … --1st • 0010 0000 0000 0010 1111 1111… --Last • Last address is • 2002:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF

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