# Upload failed: undefined

**URL:** <https://forum.pydio.com/t/upload-failed-undefined/3717>\
**Category:** Pydio Cells\
**Created:** [February 7, 2021, 5:02pm UTC](https://forum.pydio.com/t/upload-failed-undefined/3717 "2021-02-07T17:02:25Z")\
**Posts on this page:** 1\
**Showing post:** 29

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**Author:** ![benw](https://avatars.discourse-cdn.com/v4/letter/b/8edcca/32.png) [@benw](https://forum.pydio.com/u/benw)\
**Post date:** [April 14, 2021, 2:21pm UTC](https://forum.pydio.com/t/upload-failed-undefined/3717/29 "2021-04-14T14:21:19Z")

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Hi,

I got an answer from Strato. They say that it’s impossible to add another LAN IP because they’re using Hypervisor and suggested that I use an IPv6/56 alternative. How can I go about doing this?  
From my limited knowledge I’d say that I have to change the `A` DNS Record which  
points to my IPv4 address to a Quad-A record which points to my IPv6 address and modify the binding address of cells from my previous `10.0.0.1` to an IPv6 address (surrounded by `[]`) in a subnetwork that I have to build (I guess that’s gonna take some research). Is that possible?  
By the way, tried to bind Cells to `127.0.0.1` and `localhost` to see what happens, it doesn’t work either.

Cheers,

Ben

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