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    Comcast native ipv6 for network devices.

    Scheduled Pinned Locked Moved IPv6
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    • B
      bardelot
      last edited by

      @databeestje:

      No, that looks more like a stateless autoconf address, you get that one for free, but that would atleast imply that something is advertising.

      Maybe one could add the radvdump binary to pfsense (or have it as a package) as I assume it could help a few to ease debugging their IPv6 setup?

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      • W
        whfsdude
        last edited by

        @databeestje:

        No, that looks more like a stateless autoconf address, you get that one for free, but that would atleast imply that something is advertising.

        It's actually not. Comcast RAs have the managed flag set on them. Mine looks the same and it's not SLAAC.

        Also 2601::/28 is Comcast's prefix they're assigning via PD.

        My guess is somehow the LL gateway isn't being added. It would really help if the OP could post a screenshot of his interface page.

        For example, mine is: Gateway IPv6 fe80::201:5cff:fe32:1481

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        • D
          databeestje
          last edited by

          Maybe johnpoz is willing to give me access to his install for debugging?

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          • W
            whfsdude
            last edited by

            Just to update with more info as to what a Comcast deployment is.

            13:54:58.045607 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 80) fe80::201:5cff:fe32:1481 > ff02::1: ICMP6, router advertisement, length 80
            hop limit 0, Flags [managed, other stateful], pref medium, router lifetime 1800s, reachable time 30000s, retrans time 1000s[ndp opt]

            Screenshot of interfaces: http://willscorner.net/tmp/comcastic.png

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            • D
              databeestje
              last edited by

              Yeah, that screenshot looks healthy.

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by

                Yeah more than willing to give access to take a look..  Just PM me when would be good time for you to access, and I can send you the info to remote in.

                I have got a comcast guy on another forum checking for sure if should be available in my area.

                As to screen shots and what em – they might of swapped because I was using 2 different vms in testing this.  I had a clean vm that wasn't working and then was playing with it again on my normal vm.  So those 2 vms might be swapped for which em is wan and which is lan, etc.  Would have to double check that.

                edit:
                So if you see in the screenshots I posted I was getting Ips -- but just couldn't get anywhere, I didn't see a default route for ipv6.  But looking forward to your PM on your schedule - I should be available tonight, few hours from now to switch it over to my clean install with no tunnel setup -- can let you in for sure to take a look.  Would really really appreciate that!

                If you have time now I could remotely turn on remote access and let you in to current setup with HE tunnel setup, etc.  And you could play with that.  Don't care too much if you break the tunnel setup.  Doesn't matter if loose the tunnel that is currently setup, would like to go native anyway ;)

                edit2:  Got your PM, thanks once I hear back from the comcast guy that its suppose to be there I will let you know.  But what I am thinking is it's not there yet?

                So this is my normal vm, I turned off the HE tunnel.  Updated to the latest and greatest snap

                2.1-BETA0 (i386)
                built on Tue Jun 19 20:53:56 EDT 2012
                FreeBSD 8.3-RELEASE-p3

                I then run gitsysnc this morning to be sure.  Deleted my HE tunnel stuff, set wan to dhcp6, prefix delegation 64.  Then set Lan to track and 0 for prefix ID.  Rebooted.

                As you can see from screenshot I get a /128 and shows a /64 on my lan.. But just don't get a route out on ipv6 -- so I have highlighted that yes my wan is em1, and let a tcpdump -i em1 -vv ip6 run for like 5 minutes or so and just don't see anything!  I should be seeing RA should I not?  There should be some in a 5 minute period I would think ;)

                So my guess is something is not turned on at my isp for native to work yet for me.  Once I hear back from the comcast guy on another forum that is checking with my modem mac and still nothing working I will let you know and more than happy to let you in.  Happy to let you in now if you want.

                tcpdumpnoRA.png
                tcpdumpnoRA.png_thumb

                An intelligent man is sometimes forced to be drunk to spend time with his fools
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                Please don't Chat/PM me for help, unless mod related
                SG-4860 24.11 | Lab VMs 2.8, 24.11

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  I edited my last post, but does not seem to have bumped the time on the thread.  So bumpity bump ;)

                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                  If you get confused: Listen to the Music Play
                  Please don't Chat/PM me for help, unless mod related
                  SG-4860 24.11 | Lab VMs 2.8, 24.11

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                  • W
                    whfsdude
                    last edited by

                    johnpoz,

                    Reach out in the Comcast forums on dslreports.com. It looks like they've set up DHCPv6 without RA. Just checking though, you've got a DOCSIS3 modem, right?

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by

                      Yup SB6120, and have PM out to netdog on that site, he responded already once - but seems I only game him the CMTS-MAC, when he needed the CM-MAC?  So now I have sent him everything I could see from the modem with any sort of mac in it ;)

                      I thought he would need the CMTS-MAC to see if ipv6 was enabled on my connection, this is what my modem connects too right?

                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                      If you get confused: Listen to the Music Play
                      Please don't Chat/PM me for help, unless mod related
                      SG-4860 24.11 | Lab VMs 2.8, 24.11

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                      • W
                        whfsdude
                        last edited by

                        @johnpoz:

                        Yup SB6120, and have PM out to netdog on that site, he responded already once - but seems I only game him the CMTS-MAC, when he needed the CM-MAC?  So now I have sent him everything I could see from the modem with any sort of mac in it ;)

                        I thought he would need the CMTS-MAC to see if ipv6 was enabled on my connection, this is what my modem connects too right?

                        Ha! He actually plucked my IPv6 from a forum posting and looked me up. Told me to kick my modem so I could grab 3 x upstream.

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by

                          I also posted all my info in the comcast direct forum on that site.

                          Well post back what I hear, but yeah it seems like just no RAs.  If comcast comes back and says it should be working, I have remote access setup for databeestje already and have PM'd him the info.

                          I did notice your nick on that forum as well.

                          An intelligent man is sometimes forced to be drunk to spend time with his fools
                          If you get confused: Listen to the Music Play
                          Please don't Chat/PM me for help, unless mod related
                          SG-4860 24.11 | Lab VMs 2.8, 24.11

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                          • johnpozJ
                            johnpoz LAYER 8 Global Moderator
                            last edited by

                            Ok databeestje got into my box, and he mentioned that my VM is not set to promiscuous on the switch the pfsense wan interface is connected to. Would block NDS.

                            So I changed that

                            But still not working, ran this command

                            rtsol -DF em1
                            checking if em1 is ready…
                            em1 is ready
                            set timer for em1 to 0:624884
                            New timer is 0:00624811
                            New timer is 0:00004311
                            timer expiration on em1, state = 1
                            send RS on em1, whose state is 2
                            set timer for em1 to 4:0
                            New timer is 4:00002585
                            timer expiration on em1, state = 2
                            send RS on em1, whose state is 2
                            set timer for em1 to 4:0
                            New timer is 4:00000173
                            received RA from fe80::250:56ff:fe00:2 on an unexpected IF(em0)
                            New timer is 0:00779783
                            timer expiration on em1, state = 2
                            send RS on em1, whose state is 2
                            set timer for em1 to 1:0
                            New timer is 1:00000259
                            timer expiration on em1, state = 2
                            No answer after sending 3 RSs
                            stop timer for em1
                            there is no timer

                            So unless have to restart the esxi box?  To allow the switch setting to take effect, seems like no RAs

                            An intelligent man is sometimes forced to be drunk to spend time with his fools
                            If you get confused: Listen to the Music Play
                            Please don't Chat/PM me for help, unless mod related
                            SG-4860 24.11 | Lab VMs 2.8, 24.11

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                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator
                              last edited by

                              so I heard back from netdog

                              8m : 2012-06-20 15:33:59 : From NetDog See Profile delete · mark-unread · keep
                              The CMTS your on supports IPv6 and I can see leases going out to other customers on the DHCP server.

                              but I responded back to him that not seeing any RAs and no default route.

                              An intelligent man is sometimes forced to be drunk to spend time with his fools
                              If you get confused: Listen to the Music Play
                              Please don't Chat/PM me for help, unless mod related
                              SG-4860 24.11 | Lab VMs 2.8, 24.11

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                              • johnpozJ
                                johnpoz LAYER 8 Global Moderator
                                last edited by

                                so I did a gitsync since I saw that wrong RA commit, and then hit save on my wan and its working from the router now.

                                Internet6:
                                Destination                      Gateway                      Flags      Netif Expire
                                default                          fe80::201:5cff:fe31:da01%em1  UGS        em1
                                ::1                              ::1                          UH          lo0
                                2001:558:6033:12c:585b:3619:66ef:e1b1 link#2                        UHS        lo0
                                2601:d:8b80:2c::/64              link#1                        U          em0
                                2601:d:8b80:2c::1                link#1                        UHS        lo0
                                2601:d:8b80:2c:250:56ff:fe00:2    link#1                        UHS        lo0
                                fe80::%em0/64                    link#1                        U          em0
                                fe80::1:1%em0                    link#1                        UHS        lo0
                                fe80::250:56ff:fe00:2%em0        link#1                        UHS        lo0
                                fe80::%em1/64                    link#2                        U          em1
                                fe80::250:56ff:fe00:1%em1        link#2                        UHS        lo0
                                fe80::%lo0/64                    link#6                        U          lo0
                                fe80::1%lo0                      link#6                        UHS        lo0
                                fe80::%ovpns1/64                  link#10                      U        ovpns1
                                fe80::250:56ff:fe00:2%ovpns1      link#10                      UHS        lo0
                                ff01::%em0/32                    fe80::250:56ff:fe00:2%em0    U          em0
                                ff01::%em1/32                    fe80::250:56ff:fe00:1%em1    U          em1
                                ff01::%lo0/32                    ::1                          U          lo0
                                ff01::%ovpns1/32                  fe80::250:56ff:fe00:2%ovpns1  U        ovpns1
                                ff02::%em0/32                    fe80::250:56ff:fe00:2%em0    U          em0
                                ff02::%em1/32                    fe80::250:56ff:fe00:1%em1    U          em1
                                ff02::%lo0/32                    ::1                          U          lo0
                                ff02::%ovpns1/32                  fe80::250:56ff:fe00:2%ovpns1  U        ovpns1
                                [2.1-BETA0][admin@pfsense.local.lan]/root(10): ping6 ipv6.google.com
                                PING6(56=40+8+8 bytes) 2001:558:6033:12c:585b:3619:66ef:e1b1 –> 2607:f8b0:400f:801::1013
                                16 bytes from 2607:f8b0:400f:801::1013, icmp_seq=0 hlim=55 time=36.524 ms
                                16 bytes from 2607:f8b0:400f:801::1013, icmp_seq=1 hlim=55 time=36.316 ms
                                16 bytes from 2607:f8b0:400f:801::1013, icmp_seq=2 hlim=55 time=36.014 ms
                                16 bytes from 2607:f8b0:400f:801::1013, icmp_seq=3 hlim=55 time=35.045 ms
                                16 bytes from 2607:f8b0:400f:801::1013, icmp_seq=4 hlim=55 time=35.084 ms
                                ^C
                                --- ipv6.l.google.com ping6 statistics ---
                                5 packets transmitted, 5 packets received, 0.0% packet loss
                                round-trip min/avg/max/std-dev = 35.045/35.797/36.524/0.619 ms

                                [2.1-BETA0][admin@pfsense.local.lan]/root(11): traceroute6 ipv6.google.com
                                traceroute6 to ipv6.l.google.com (2607:f8b0:400f:801::1013) from 2001:558:6033:12c:585b:3619:66ef:e1b1, 64 hops max, 12 byte packets
                                1  * * *
                                2  te-1-2-ur07.mtprospect.il.chicago.comcast.net  13.203 ms  10.957 ms  9.458 ms
                                3  te-1-2-0-5-ar01.elmhurst.il.chicago.comcast.net  13.770 ms  22.087 ms  26.169 ms
                                4  pos-0-7-0-0-cr01.chicago.il.ibone.comcast.net  18.085 ms  18.121 ms  15.739 ms
                                5  pos-1-8-0-0-cr01.350ecermak.il.ibone.comcast.net  17.688 ms  17.588 ms  15.752 ms
                                6  pos-1-4-0-0-pe01.350ecermak.il.ibone.comcast.net  14.264 ms  13.737 ms  13.539 ms
                                7  2001:559::382  14.099 ms  13.056 ms  12.680 ms
                                8  2001:4860::1:0:3f7  12.781 ms
                                    2001:4860::1:0:92e  22.108 ms
                                    2001:4860::1:0:3f7  13.786 ms
                                9  2001:4860::8:0:2fe9  13.781 ms  16.365 ms  13.853 ms
                                10  2001:4860::8:0:281d  50.876 ms
                                    2001:4860::8:0:281e  36.705 ms
                                    2001:4860::8:0:281d  35.046 ms
                                11  2001:4860::8:0:3426  35.580 ms  37.061 ms  36.148 ms
                                12  2001:4860::1:0:7a4  36.630 ms  36.996 ms  36.876 ms
                                13  2001:4860:0:1::593  38.282 ms  45.503 ms  35.759 ms
                                14  2607:f8b0:8000:1d::f  37.068 ms  37.603 ms  35.807 ms
                                [2.1-BETA0][admin@pfsense.local.lan]/root(12):

                                Have to see if can get a client going now.  But seems gateway widget is not working

                                WAN_DHCP6 Pending Pending Unknown

                                or

                                WAN_DHCP6 ~ ~ ~ Unknown

                                An intelligent man is sometimes forced to be drunk to spend time with his fools
                                If you get confused: Listen to the Music Play
                                Please don't Chat/PM me for help, unless mod related
                                SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                • johnpozJ
                                  johnpoz LAYER 8 Global Moderator
                                  last edited by

                                  spoke too soon.  Just did a reboot of pfsense, and now no route and

                                  ping6 ipv6.google.com
                                  ping6: UDP connect: No route to host

                                  So is this something wrong with pfsense, or comcast just not sending RA's – I have to guess no RA's since shouldn't I see them with a simple tcpdump?

                                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                                  If you get confused: Listen to the Music Play
                                  Please don't Chat/PM me for help, unless mod related
                                  SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                  • W
                                    whfsdude
                                    last edited by

                                    tcpdump again.

                                    you could technically avoid RA issues at this point by setting the default gw to default  fe80::201:5cff:fe31:da01%em1  UGS        em1

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                                    • johnpozJ
                                      johnpoz LAYER 8 Global Moderator
                                      last edited by

                                      That sure and the hell does not seem like a fix to me..  When it was working from pfsense, my clients were not working for starters.

                                      A better fix would be to just go back to my tunnel ;)

                                      And is it really common practice for my gateway to be linklocal?  Then why give my interface a global address??  Shouldn't I have a global gateway address to match up with my /128?

                                      I just do not get why they can not just freaking hand out the gateway via dhcp??

                                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                                      If you get confused: Listen to the Music Play
                                      Please don't Chat/PM me for help, unless mod related
                                      SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                      • W
                                        whfsdude
                                        last edited by

                                        @johnpoz:

                                        That sure and the hell does not seem like a fix to me..  When it was working from pfsense, my clients were not working for starters.

                                        How is it not a valid fix? Did you add the correct firewalls to pass v6 traffic?

                                        A better fix would be to just go back to my tunnel ;)

                                        Have you tried just installing a new build without any previous tunnel configuration?

                                        And is it really common practice for my gateway to be linklocal?  Then why give my interface a global address??  Shouldn't I have a global gateway address to match up with my /128?

                                        Yes.

                                        I just do not get why they can not just freaking hand out the gateway via dhcp??

                                        It's not. Worked out the box for me. You do realize that DHCPv6 doesn't have an option to hand out a gateway. …that's why RA is used.

                                        Edit: Maybe the best solution is plug a laptop directly into the modem and run tcpdump. You'll be able to verify RAs.

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                                        • johnpozJ
                                          johnpoz LAYER 8 Global Moderator
                                          last edited by

                                          I am aware that dhcpv6 does not hand out gateway!  Just ranting here - don't understand why it was removed, why not leave it as an option?

                                          Its not a fix, because setting a static gateway like that – that might change is not a good idea!  If it was my network and knew it wasn't going to change then sure.  But I have no idea what comcast might do next week.

                                          Plugging a box directly into my modem is a great idea, because what I can tell you is not seeing any RA's for sure currently.

                                          An intelligent man is sometimes forced to be drunk to spend time with his fools
                                          If you get confused: Listen to the Music Play
                                          Please don't Chat/PM me for help, unless mod related
                                          SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                          • johnpozJ
                                            johnpoz LAYER 8 Global Moderator
                                            last edited by

                                            Ok I plugged 2 different boxes into my modem, and yes rebooted modem between changing them.  Got online with ipv4 no issues.

                                            But linux didn't even get an IP via dhcpv6, and with tcpdump did not see any RAs - using radvdump nothing.  Connected a win 7 box, got an ip - and even pointed at ipv6 dns, but couldn't talk to them ;)

                                            Seems native ipv6 here in schaumburg is not yet ready for prime time!  Back to my nice stable HE tunnel I guess

                                            An intelligent man is sometimes forced to be drunk to spend time with his fools
                                            If you get confused: Listen to the Music Play
                                            Please don't Chat/PM me for help, unless mod related
                                            SG-4860 24.11 | Lab VMs 2.8, 24.11

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