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IPv6 on WAN

xeonic
Recently my ISP started to support IPv6 natively, they are handing out a /56 subnet via DHCPv6. My ISP provided router is currently working with IPv6 but I can't seem to get my UTM to grab an IPv6 address. 

I enabled IPv6 in 'Interfaces & Routing' and I have my WAN interface (eth0) set to both IPv4 and IPv6 default GW plus dynamic IP. 

Is there anything else I need to do?

I noticed that in the 'system messages' log, there are only entries for WAN IPv4 DHCP requests, there is nothing related to IPv6.

Thanks!


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  • 0
    Hi, i have the same problem with dhcp on my utm9. appliance doesn't get any ipv6 address from my router, only ipv4.
    is there any solution ?

    thanks
  • 0 in reply to RobertRochner

    Hi, Robro, and welcome to the UTM Community!

    Are you certain that your router supports IPv6?  You might have a better chance if you set the router to bridge mode.  Any luck with that?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0

    Hi Folks

    i´ve got the same problem. With Fritz.Box directly connected to router from "Deutsche Glasfaser" I get an IPv6 adress.

    With Sophos UTM9.3 i dont get an IPv6 address,

    In "Interfaces & Routing - IPv6" there is no IPv6 address, only "Native over eth1 - delegated präfix 2a00:xxxx:xxxx:xxxx::/56"

    What may be wrong?

    I restarted firewall, and i restarted router from provider. No changes at all

    greeting

    Christian

  • 0 in reply to BAlfson

    Hi Bob,


    sorry for the late response. i tried the same with the new sophos xg firewall and with this firewall it works. with utm9 it doesn't. it seems to be a problem with dhcpv6 and utm9. but my favourite fw is utm9, so i have to accept this behaviour.

    yes, my router supports ipv6. ipv4 is only for internal use. all traffic to the internet goes over ipv6. it is called a ipv4 dsl lite tunnel over ipv6.


    thanks


    Robert

  • 0

    As far as I read and testet the IPv6 implementation on UTM is really buggy regarding prefix delegation from ISPs (see several thread from user "Ben" and others).

    So if any of you has a paid license please open a support case with Sophos...

    ----------
    Sophos user, admin and reseller.
    Private Setup:

    • XG: HPE DL20 Gen9 (Core i3-7300, 8GB RAM, 120GB SSD) | XG 18.0 (Home License) with: Web Protection, Site-to-Site-VPN (IPSec, RED-Tunnel), Remote Access (SSL, HTML5)
    • UTM: 2 vCPUs, 2GB RAM, 50GB vHDD, 2 vNICs on vServer (KVM) | UTM 9.7 (Home License) with: Email Protection, Webserver Protection, RED-Tunnel (server)
  • 0 in reply to scorpionking

    just a bit buggy ya ;) 

    it sometimes help to deactivate/reactivate IPv6, do delete the prefixes via shell and restart the watchdog (scorpionking posted that on the old astaro.org board) ->

    rm /var/chroot-dhcpc/var/db/*.leases6
    /var/mdw/scripts/ipv6_watchdog restart

    If anyone wants i can have a look via teamviewer/anydesk, i am really interested how other ISPs handle it. Just send a PM with Skype or other IM Contact.

    ---

    Sophos UTM 9.3 Certified Engineer

  • 0 in reply to Ben

    IPv6 works fine on my UTM (9.3)

    1. enable IPv6 under interfaces >ipv6 >global and it should show under the global tab.
    2. enable the prefixes under the prefix advertisements for the interfaces you want IPv6 to use. This is where you decide if you are going to use Router advertisements, the dhcp server on the UTM or a windows DHCP server etc
    3. enter the IPv6 gateway address for each interface

    It should work then. I have multiple vlans running IPv6 sucessfully on UTM9.3. One thing to remember is that you can't have a static IPv4 and IPv6 running at the same time. Simply change the IPv4 to dynamic and your IPv6 will connect. You can still use static IPv4 addresses as I do but no not set the inferface as static.

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