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By IPV6 Configuration no Link Local DNS allowed

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By IPV6 Configuration no Link Local DNS allowed

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By IPV6 Configuration no Link Local DNS allowed
By IPV6 Configuration no Link Local DNS allowed
2021-12-18 13:28:18
Model: ER605 (TL-R605)  
Hardware Version: V1
Firmware Version: omada controller sdn 4.4.8

I would like to use our own DNS Server in our Intranet. We have no static IPV6 address, thats why i need to give the Link Local address from my DNS Server.

 

But Link Local address as manual DNS address not allowed.

 

Is this a bug or how can I resolve this?

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#1
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6 Reply
Re:By IPV6 Configuration no Link Local DNS allowed
2021-12-18 21:17:32

You should probably be using ULA addresses instead of link-local, I'm guessing those would be accepted.

 

https://cd34.com/rfc4193/

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#2
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Re:By IPV6 Configuration no Link Local DNS allowed
2021-12-18 21:48:19

@karlshea thank you for your answer.

 

ULA Addresses ist not accepted. Only you can give Global Adresses.

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#3
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Re:By IPV6 Configuration no Link Local DNS allowed
2021-12-19 00:31:11

@vedat That definitely sounds like a bug then.

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#4
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Re:By IPV6 Configuration no Link Local DNS allowed
2021-12-22 06:23:08

@vedat 

 

karlshea is correct. As I known, In general, the ipv6 Link-Local addresses (fe80) is only used for neighbor discovery or for communication when there is no router.  
Routers will not forward packets from this address.
So it is recommended that you use the Global addresses.
Please take a look:

 

 

Just striving to develop myself while helping others.
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#5
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Re:By IPV6 Configuration no Link Local DNS allowed
2021-12-22 06:36:53

@Virgo ULA addresses should be accepted though.

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#6
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Re:By IPV6 Configuration no Link Local DNS allowed
2021-12-22 07:16:36

@Virgo, thank you for your comment.

 

  • In my case ULA make complicated my network. With my existing router fritz.box is accepted the link local address for DNS-Server and I can enter my neighbor link local address as DNS-Server and this will be assignment to client.

 

                 --- Local DNS Server (2001::    and fe80::)

                |

                |

Router ---- ---- Client (2001:: and fe80::)

                |

                |

                 --- Client (2001:: and fe80::)

 

  • The router assignment the fe80 of Local DNS Server and the clients ask the server.
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#7
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Information

Helpful: 3

Views: 1056

Replies: 6

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