Re: Re: Spectrum & GRE

[The Multach's via NANOG <nanog () lists nanog org>]

I wonder if this has anything to do with the handling of GRE for 
tunneling hotspot Wi-Fi traffic from their routers.

It wouldn't be the first time an ISP's handling of their own traffic 
caused problems with a user's traffic, even though it shouldn't.

On 5/13/2025 7:00 PM, nanog-request () lists nanog org wrote:
> Message: 1
> Date: Mon, 12 May 2025 16:14:15 -0400
> From: Christopher Aloi<ctaloi () gmail com>
> Subject: Re: Spectrum & GRE
> To: North American Network Operators Group<nanog () lists nanog org>
> Message-ID:
>         <CAMCCzApYOeUpEd7P8mjDbVKm6Nzx=0Lva4iuVhD1S+y-87Q2xw () mail gmail com>
> Content-Type: text/plain; charset="UTF-8"
>
> Thanks Eric and Brendan.  Yes, this is specifically related to when we put
> the rac2v1s in bridge mode and I bind one of the static public IP addresses
> to my router.  If I captured packets on my router I can see GRE packets
> leaving my router destined for my data center, but I never see any of the
> return packets I send.  They are being lost/dropped on the way back in.  I
> am up to 30 of these now.  What I can't grock is why they come in at a rate
> of ~5 every morning.  If anyone has any contacts at Spectrum that might
> listen, or a workaround, please let me know!
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