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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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Presentation Transcript
bogons
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
more bogons
More Bogons
  • These addresses are unallocated or reserved and should not be used on the Internet
    • fe80::/10fec0::/10fc00::/7ff00::/82001:db8::/323ffe::/16
credits
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
slide11
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

solution
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

slide13
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

the ulas are fc00 7 what is the largest ula unique local address
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

solution1
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
the link local addresses are fe80 10 what is the largest link local address
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

solution2
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
slide18
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

the multicast addresses are ff00 8 what is the largest multicast address
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

these are unroutable 6to4 addresses 2002 e000 19 what is the largest address in this range
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

solution3
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