Subj : Connectivity Validation
To   : Wilfred van Velzen
From : Scott Street
Date : Mon Oct 04 2021 23:54:02

01 Oct 21 15:45, you wrote to me:

 WV> Still no connect possible to 1:266/420. My system has been trying
 WV> every 2 hours since above date...

After much back and forth with Comcast/Xfinity;  I have found that I needed to drop IPv6 support for incoming connections.  A shame really, because Comcast's gateways do not support UPNP for IPv6.  Oh, and why UPNP?  Because the router "calls home" to Comcast periodically (often?) and gets new configuration information and it seems that in my region, the port forwards are not saved.  So I discovered a simple workaround for there junk software;  now two things happen, first when my DHCP client detects a network change it runs my DNS update script and that script now includes 'upnpc' commands to refresh the port mappings.  The script also runs every five hours just in case the gateway's IP address changed without changes on the inside.

I wish I thought of UPNP a week or so ago;  would have saved me many hours of hold time and fustration.

Thanks all for reading,
Scott

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 * Origin: -={ The Digital Post }=- (1:266/420)

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