Only IPv6 update Only IPv6 update

Topic: Only IPv6 update

Post Only IPv6 update
by Pascal Vyncke on 2017年8月13日

I use a raspberry pi with the dynudns update.
It works well to connect and update, but it ONLY updates the ipv6 address, never the ipv4 address.
But if I connect with other devices (like my Android phone), they can't connect because they use the old ipv4 address that I don't get updated.

What is wrong?
I followed
And use this url to update:

So I can see that the ipv6 gets updated (and if I change it to something else, after an update it is OK), but the ipv4 always stays the same; even if it is wrong (when I manually change it; the respons is always "nochng")

thank you

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Post Re: Only IPv6 update
by lucafesta on 2017年8月16日

By using this update URL, the server will pick up the IP address from where the update request originates. I guess only IPv6 was detected so only IPv6 was updated.

If there is any way you can get the IP address first and then use the IP address in the update string, both IPv4 and IPv6 will be updated:

Someone familiar with raspberry pi could write up a script to do it.

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Post Re: Only IPv6 update
by Sawyer on 2021年10月27日

Posting the solution for completeness' sake. This is the full command:
echo url="$(curl -s -4" | curl -k -o /path/to/logfile -K -

If you need your IPv6 address as well you can append to the url:
&myipv6=$(curl -s -6

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2024年7月15日 7:47