Ipv6 part 2
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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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IPv6 Part 2

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Ipv6 part 2

IPv6 Part 2


Unique local unicast addresses

Unique Local Unicast Addresses

FC00::/7


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::/19Class D & E2002:7f00::/24Loopback2002:0000::/240.0.0.0/82002: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


Iclicker questions

iClicker Questions


Ipv6 part 2

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


Ipv6 part 2

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


Ipv6 part 2

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


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