DynDNS update with Strato DNS fails

RouterOS Scripting
1

Hi,

i’ve used this script to update my ddns:

:global ddnsuser "xxxx"
:global ddnspass "xxxxx"
:global theinterface "pppoe-telekom-fiber"
:global ddnshost1 "xxxx"

:global ipddns
:global ipfresh [/ip address get [find where interface=$theinterface] value-name=address]     

:if ([ :typeof $ipfresh ] = nil ) do={

    :log info ("DynDNS: No ip address on $theinterface .")

} else={

    :for i from=( [:len $ipfresh] - 1) to=0 do={ 

        :if ( [:pick $ipfresh $i] = "/") do={ 

            :set ipfresh [:pick $ipfresh 0 $i];

        } 
    }

    :if ($ipddns != $ipfresh) do={

        :log info ("DynDNS: IP-DynDNS = $ipddns")
        :log info ("DynDNS: IP-Fresh = $ipfresh")
        :log info "DynDNS: Update IP needed, Sending UPDATE...!"

        :global str1 "/nic/update\?hostname=$ddnshost1&myip=$ipfresh"
        /tool fetch address=dyndns.strato.com src-path=$str1 user=$ddnsuser password=$ddnspass mode=https dst-path=("/DynDNS.".$ddnshost1)

        :delay 1

        :global str1 [/file find name="DynDNS.$ddnshost1"];
        /file remove $str1
        :global ipddns $ipfresh
        :log info "DynDNS: IP updated to $ipfresh!"

    } else={

        :log info "DynDNS: dont need changes";

    }
}

Since the grid failure today, i’m getting the following error:

Download from 81.169.144.192 FAILED: Fetch failed with status 301 (Location: "https://www.strato.de/nic/update?hostname=xxxx.de&myip=xxxxxx")

I’ve checked the informations from my service provider, but they seems to be ok:
https://www.strato.de/faq/hosting/so-einfach-richten-sie-dyndns-fuer-ihre-domains-ein/

I have no idea, where to search for a solution…

2

Google “http error 301”…

3

@wolkenschaufler, you’re using the wrong URL. It should be: “https://:@dyndns.strato.com/nic/update?hostname=&myip=,”.

Check this out for more info: https://www.strato.de/faq/hosting/so-einfach-richten-sie-dyndns-fuer-ihre-domains-ein

4

On the script the url is right, why on log the url is not the same?..

5

Fixed.

6

same problem here …

… changed

/tool fetch address=dyndns.strato.com src-path=$str1 ...

to

/tool fetch url="https://dyndns.strato.com$str1" ...

works for me

7

Hello!

I face the same problme since today. I did not understand how it was fixed?

BR Holger

8

just simply use url=“…” with right parameters without all other useless frills.

9

My scrpt worked fine until yesterday, so something must have changed…

10
11

Thank you guys for the quick solution to the script. Does anybody know if this error in the script came from a change by Stratos or the latest Mikrotik ROS Update 7.19 / 7.19.1 ?

12

I had the same issue, and did some diagnostics.

Strato seems to have done some work (whatever that might have been…) to their DynDNS Server.

What I found out:
The address parameter of the fetch command will send an HTTP GET, where the Host-Header is populated with the resolved IP-Address of, in this case, Strato.

The Strato Server doesn’t seem to like this anymore, responding with 301 moved permanently…

I fixed it, using the host parameter of the fetch tool:

/tool fetch address=dyndns.strato.com host=dyndns.strato.com ...

This causes the Host-Header to contain the unresolved URI (dyndns.strato.com), which Strato accepts perfectly fine…

So yeah, definitely a change on Stratos side

13

Hi,

i thought i solved the issue, but after a grid failure again today, it won’t work.

Anyone see my mistake?

:global ddnsuser "xxxx"
:global ddnspass "xxxx"
:global theinterface "pppoe-telekom-fiber"
:global ddnshost1 "xxxx"

:global ipddns
:global ipfresh [/ip address get [find where interface=$theinterface] value-name=address]     

:if ([ :typeof $ipfresh ] = nil ) do={

    :log info ("DynDNS: No ip address on $theinterface .")

} else={

    :for i from=( [:len $ipfresh] - 1) to=0 do={ 

        :if ( [:pick $ipfresh $i] = "/") do={ 

            :set ipfresh [:pick $ipfresh 0 $i];

        } 
    }

    :if ($ipddns != $ipfresh) do={

        :log info ("DynDNS: IP-DynDNS = $ipddns")
        :log info ("DynDNS: IP-Fresh = $ipfresh")
        :log info "DynDNS: Update IP needed, Sending UPDATE...!"

        /tool fetch url=("https://dyndns.strato.com/nic/update?hostname=$ddnshost1&myip=$ipfresh") \
        user=$ddnsuser password=$ddnspass mode=https dst-path=("/DynDNS.".$ddnshost1)

        :delay 1

        :global str1 [/file find name="DynDNS.$ddnshost1"];
        /file remove $str1
        :global ipddns $ipfresh
        :log info "DynDNS: IP updated to $ipfresh!"

    } else={

        :log info "DynDNS: dont need changes";

    }
}