Access issues after upgrade to 169


I only have a small network of 4 pcs, 1 laptop & 1 server.

Was using COre 162 and had no issues.

Updated/upgraded to 169 yesterday and although I can visit my site on the big ole www (using Virgin media on my phone - but if anyone else wants to double check please feel free

AND I can it at the server and access it

BUT none of the other 4 pcs can now access my site - they canaccess big ole wide world - but any attempt to visit my site is now getting the dreaded

The connection has timed out

An error occurred during a connection to

The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer’s network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

I’ve checked all the settings and as far as I can tell they are all identical.

Do I need to flush anything? And if so what/where/how?

Please be gentle with me with any suggestions as this not my strong suit…

Thanking you in advance

Could you describe your network configuration, please?

The main difference in network connectivity is the Reverse Path Filtering, which gives problems with asymmetric routing.

You can find some discussion on this topic here in the community.

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It is a simple Red-Orange-Green setup
Everything is assigned via DHCP except for static IP on the server

I have no idea where to look up Reverse Path Filtering on my system…but will have a read on the forums and see what I can find


this might help:

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