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9.4 Soft - IPv6 SSL Remote Access - iOS

ShawnStricker

For those already on the 9.4 Soft launch, and trying to use a dual-stack VPN via OpenVPN Connect on iOS, watch out for the bug that only IPv6 traffic is routed not IPv4 traffic. I already have a ticket open with support 5818685. For more information on the root cause look at 

This bug only impacts people trying to do Tunnel All VPNs, it does not impact split tunnels.



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  • in reply to ShawnStricker

    Just now found out I have the same problem on my Home UTM (9.407) where both IPv6 and IPv4 are in use and all traffic should be routed to the VPN (Remote access SSL). Using Internet IPv4 definition together with Internet IPv6 definition does ONLY route IPv6 and not IPv4.

    I have created the following two routes which "repares" this bug.

    0.0.0.0/1  and 128.0.0.0/1 (this is basically the same as 0.0.0.0/0), so it's not necessary to create all the routes specified in ShawnStricker's post. Using Internet IPv6 definition is no problem, this works as expected.

    Managing several Sophos UTMs and Sophos XGs both at work and at some home locations, dedicated to continuously improve IT-security and feeling well helping others with their IT-security challenges.

    Sometimes I post some useful tips on my blog, see blog.pijnappels.eu/category/sophos/ for Sophos related posts.

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