topic MAP-T protocol framework is completely breaking my remote work setup in Broadband

MAP-T protocol framework is completely breaking my remote work setup

Pinnocks — Thu, 10 Sep 2026 18:23:13 GMT

Hi,

I am using a Sky Max Hub on an FTTC connection alongside a TP-Link Deco XE75 mesh system. My hub's connection page shows a MAP-T Ratio of 1:1, but the MAP-T protocol framework is completely breaking my remote work setup.

When attempting to connect to my company's corporate Cisco/AnyConnect VPN and secure enterprise databases, the connection continuously times out, drops packets, and fails to establish a secure handshake. My company's IT department has confirmed their security infrastructure rejects connections carrying shared IPv4 translation headers.

I have verified this is 100% a MAP-T translation issue because my work VPN and secure files connect and transfer flawlessly the second I tether my devices to a mobile phone hotspot instead of my home broadband line.

Because I am on FTTC, I cannot bypass the Sky Max Hub hardware to eliminate the protocol locally. Could a community manager or network specialist please escalate this and apply the manual rollback profile to completely disable the MAP-T protocol on my account backend?

Thank you!

Re: MAP-T protocol framework is completely breaking my remote work setup

Chrisee — Fri, 11 Sep 2026 07:02:12 GMT

@Pinnocks your post has been autoescalated the escalation team should be in touch shortly

While it is possible that Sky's use of MAP-T is conflicting with your company's security policy of rejecting all types of IP address sharing. Thst policy is going to greatly limit which services can connect as CGNAT and other address sharing systems like MAP-T is on the increase due to the exhaustion IP4 addresses currently including all the 3 of the major UK mobile providers and apparently Starlink.. However with Sky you do have a unique public IP6 address which should overcome any security concerns .

Re: MAP-T protocol framework is completely breaking my remote work setup

SuperMatt — Fri, 11 Sep 2026 08:39:07 GMT

Hello, @Pinnocks. I'll send you an invite to a private chat shortly and we can help you.

Just look out for the colourful bubble to start the conversation. Please be aware conversations automatically close if there is no response within 48 hours. Here's more information on how Community Messaging works - https://helpforum.sky.com/t5/Did-you-know/Escalating-a-post-to-a-Sky-expert/ba-p/3711147#M141