SD-Internet for chatgpt

[Bustamantealej]

On a Meraki MX, is it possible to route traffic destined for chatgpt.com to a specific interface (WAN2 in this case)?

[GIdenJoe]

If you have the SD-WAN plus co-term license or the advantage subscription license you do get application based SD-Internet policies.  So if chatGPT is in one of the categories there you could select it that way.
I don't believe you can just add an URL as a matching criterium.

[cmr]

You can add custom traffic, but it is only CIDRs i.e. 123.234.123.0/24

[Bustamantealej]

Yes, it's a shame that only CIDR destinations can be added to custom expressions. Chatgpt handles far too many IP addresses. Hopefully, future updates will add FQDNs as an option for custom expressions. Or even better, Chatgpt as a defined application.

[PhilipDAth]

I asked Google Geminii, and it said to use these blocks:
23.102.140.112/28, 13.66.11.96/28, 23.98.142.176/28, and 40.84.180.224/28

Your mileage may vary.

[cmr]

I wish I could give you more Kudos @PhilipDAth for asking Gemini about ChatGPT, that's brilliant! 😎😂👌

[PhilipDAth]

I'm glad you appreciated that irony.