[longshanks72]

I have a problem with my home system where I use a two modem bridge. my primary is Plusnet Hub2 and a secondary Asus configured DD-WRT for use with a VPN. After my ISP adjusted the settings on the primary I have lost my VPN channel. I have been advised that there is a possible conflict with the ISP addresses.
My Question is what and how do I adjust in the setting’s on both modems if necessary to get back my VPN ?
some advise please.
regards
Brian

[egc]

Start with sharing what router model you have and what buildnumber you are running.

Your setup is not very clear it can be helpful if you post a screenshot of the setup/basic setup page (whole page, including upper right hand corner) of the DDWRT router.

See the forum guidelines with helpful pointers about how to research your router, where and what firmware to download, where and how to post and many other helpful tips:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087