Afraid.org dns script using specific wan port

RouterOS Scripting
1

Hi guys

I am trying to update my dns address for a specific wan port and would like to know if its possible with wget script. I have a 3 wan ports and would like to update address of wan3. Wan1 is my first route which means every time i run the script wan1 ip gets sent to afrad.org. Any way i can throw a interface=wan3 into the wget script or something which will send wan3 address to afraid?


/tool fetch url="http://freedns.afraid.org/dynamic/update.php\randomKey"

Thanks

2

I have looked into this before. As far as I figured out it isn’t possible in a simple fashion. … I came up with a theoretical solution to utilize “modified” URLs and some mangle rules to mark routes…

e.g. /tool fetch url=“http://freedns-ETH1.afraid.org/dynamic/update.php\randomKey” … or something like that… match on layer-7. I never actually tested the idea though.

3

Freedns.afraid.org now for me is 178.33.33.231

So you can do this:
/ip route add dst-address=178.33.33.231 gateway=1.1.1.1

Change 1.1.1.1 for your wan3 gateway

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4

I guess this might work if you where only updating 1. In my case I have 3 wan ports I need to update.

5

You “could” script it… so update the route… fetch… update the route… fetch again… update the route… fetch… etc…

That might actually work as long as it is timed correctly…

6

May this could answer:

# get freedns.afraid.org
:global a [:resolve freedns.afraid.org]
#update ddns from wan1
/ip ro add dst-address=$a gateway=wan1 comment=ddns
/tool fetch url="http://freedns.afraid.org/dynamic/update.php\randomKey"
#update ddns from wan2
/ip ro add dst-address=$a gateway=wan2 comment=ddns
/tool fetch url="http://freedns.afraid.org/dynamic/update.php\randomKey"
#update ddns from wan3
/ip ro add dst-address=$a gateway=wan3 comment=ddns
/tool fetch url="http://freedns.afraid.org/dynamic/update.php\randomKey"
# remove static gateway
/ip ro rem [find comment=ddns]
7

Is “fetch” a blocking call?.. e.g. is it guaranteed to finish before continuing the script?

8

Yes, it work fine. I have test it, with some corrections:

# get freedns.afraid.org
:global a [:resolve freedns.afraid.org]
#update ddns from wan1
/ip ro add dst-address=$a gateway=wan1 comment=ddns
/tool fetch url="http://freedns.afraid.org/dynamic/update.php\randomKey"
#update ddns from wan2
/ip ro set  [find comment=ddns] dst-address=$a gateway=wan2 
/tool fetch url="http://freedns.afraid.org/dynamic/update.php\randomKey"
#update ddns from wan3
/ip ro set  [find comment=ddns] dst-address=$a gateway=wan3 
/tool fetch url="http://freedns.afraid.org/dynamic/update.php\randomKey"
# remove static gateway
/ip ro rem [find comment=ddns]
9

Tried it but when i run the script no route is added.

10

Because the last line removes the route…

/ip ro rem [find comment=ddns]

11

I know that but wile i am running the script should i not see it come and go?

12

Maybe.. Just depends on the speed

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13

Freedns has a hidden feature, you can add &address=x.x.x.x to the update url

4). If you are behind a firewall and Free DNS is not detecting your IP address correctly, you can add &address=127.0.0.2 to the update string, to override Free DNS auto-detection. To see the order and/or HTTP variables checked that Free DNS attempts to detect your IP address, you can click here