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    MDNS across two interfaces WITHOUT Avahi - help !

    Scheduled Pinned Locked Moved General pfSense Questions
    42 Posts 5 Posters 15.9k Views
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    • D
      doktornotor Banned
      last edited by

      Yeah, it does. There's a checkbox somewhere in log settings to disable the default rule logging, plus a bunch of others.

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      • K
        kejianshi
        last edited by

        Got it…  Thanks.

        Status > System Logs > settings

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        • I
          ilium007
          last edited by

          @doktornotor:

          Oh really? So the traffic comes from… hmmm, another galaxy? :D Pretty much every OS out there is using IPv6 by default these days.

          So is this a solution ? Do we have to have IPv6 enabled to make mDNS work ?

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          • D
            doktornotor Banned
            last edited by

            I don't use mDNS nor any Apple device for anything => no such nonsense needed here. As stated by the linked RFC (written by Apple itself, BTW), it uses both IPv4 and IPv6.

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            • I
              ilium007
              last edited by

              @doktornotor:

              I don't use mDNS nor any Apple device for anything => no such nonsense needed here. As stated by the linked RFC (written by Apple itself, BTW), it uses both IPv4 and IPv6.

              So what's with the hoohaa about me not using IPv6 ?

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              • D
                doktornotor Banned
                last edited by

                Sigh. I merely replied about the logspam of IPv6 traffic posted in this post. The reply was not aimed at you personally at all, not sure why you've taken is as such or what's the subsequent noise about even. IPv6 is being used on your LAN no matter what checkboxes you disable on the firewall. I frankly don't think you are achieving anything useful by disabling it on the firewall and thus blocking all IPv6 traffic that hit the box (such as the traffic between different subnets).

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                • I
                  ilium007
                  last edited by

                  @doktornotor:

                  Sigh. I merely replied about the logspam of IPv6 traffic posted in this post. The reply was not aimed at you personally at all, not sure why you've taken is as such or what's the subsequent noise about even. IPv6 is being used on your LAN no matter what checkboxes you disable on the firewall. I frankly don't think you are achieving anything useful by disabling it on the firewall and thus blocking all IPv6 traffic that hit the box (such as the traffic between different subnets).

                  Sigh… thanks

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                  • GruensFroeschliG
                    GruensFroeschli
                    last edited by

                    Hi.
                    Since i originally suggested using the igmp proxy to route the multicast traffic needed for mDNS i should chime in.

                    This was only a suggesting which i think should work.
                    I don't have any apple devices and don't really use mDNS myself.

                    From your posted screenshot it looks as if the devices in question are trying to communicate via IPv6 for their mDNS communication.
                    However they probably fall back at some time to IPv4 (or querry v4 and v6 together right from the beginning), and you just don't see this kind of traffic in the log because it's allowed.

                    I'm not really sure how to debug/verify this.
                    I did just now some short tests but couldn't get anything to traverse the pfSense.
                    Not sure if i missunderstood something the way the igmp proxy works, or i just can't generate the mDNS lookups the right way. (i'm trying with "dig +short -x 10.0.0.200 @224.0.0.251 -p 5353" and with "getent hosts 10.0.0.200")

                    We do what we must, because we can.

                    Asking questions the smart way: http://www.catb.org/esr/faqs/smart-questions.html

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                    • K
                      kejianshi
                      last edited by

                      One of the guys I was sorta kinda working with a little earlier does use what seems to be pretty much any apple device he can find and is running 2.1 + avahi and its working.  The problems so far seem to be with avahi running on smallish alix type systems that upgraded with avahi already in place and had issues.  I've not seem an instance of someone just clean installing 2.1 on alix with avahi yet.  Not sure what that might do.

                      Either way I'm waiting to see how igmp proxy might work out.

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                      • T
                        tim.mcmanus
                        last edited by

                        I had IPv6 running on pfSense with a pass-all rule set up just like the default "LAN -> any" rule.  I also checked off the advanced options checkbox like I posted in the IPv4 screen shot too.

                        pfSense still wants to block the port 5353 IPv6 traffic and it doesn't want to route the IPv6 traffic.  I don't know squat about IPv6, but I put the IPv6 address of the firewall into the IGMP settings and it still didn't work.

                        There's a good chance it's how I am setting up my IPv4 settings in IGMP.  Can anyone give me guidance on that (based on my screen shots included in this thread)?  It should fail back to IPv4 and work, I'm not sure my proxy settings are correct.

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                        • K
                          kejianshi
                          last edited by

                          Well - If you don't need IPV6 block it, then just ignore the noise in your logs about it getting blocked.

                          Thats assuming you are on IPV4 and like it that way.

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                          • I
                            ilium007
                            last edited by

                            @kejianshi:

                            Well - If you don't need IPV6 block it, then just ignore the noise in your logs about it getting blocked.

                            Thats assuming you are on IPV4 and like it that way.

                            This comment reflects my requirements. I have no need for IPv6 at this point and just need to find a way to allow IPv4 packets across network boundaries on pfSense.

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                            • K
                              kejianshi
                              last edited by

                              Yep - Got it.

                              I don't know if you can use IGMP proxy to accomplish this.  I do know that avahi does work well.  I just am not sure why its being bad after an update to 2.1 on Alix, because it does seem to be an Alix issue.

                              I keep wondering if avahi will work from a clean install of 2.1 but seems no one is willing to image their system from fresh to try it.

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                              • I
                                ilium007
                                last edited by

                                @kejianshi:

                                Yep - Got it.

                                I don't know if you can use IGMP proxy to accomplish this.  I do know that avahi does work well.  I just am not sure why its being bad after an update to 2.1 on Alix, because it does seem to be an Alix issue.

                                I keep wondering if avahi will work from a clean install of 2.1 but seems no one is willing to image their system from fresh to try it.

                                I can take a backup of mine and try it.

                                The other major issue that I have is swapping between wired Ethernet and wifi on the same subnet:

                                I have a suspicion that this is an Avahi problem and one of the reasons I don't want it on my Alix / pfSesne box any longer however this was to be the topic of another thread I have never had time to start !

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                                • K
                                  kejianshi
                                  last edited by

                                  I think your MAC air is just seeing its name is already in a DHCP reservation with a different MAC and is doing that.

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                                  • I
                                    ilium007
                                    last edited by

                                    @kejianshi:

                                    I think you MAC air is just seeing its name is already in a DHCP reservation with a different MAC and is doing that.

                                    OK - so possibly a DCHO configuration / MacbookAir issue. I would imagine that when the macbook leaves a wifi network the DHCP reservation is not released. But the strange this is that the wifi adapter and wired ethernet adapter have different MAC address as would be obviously expected.

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                                    • T
                                      tim.mcmanus
                                      last edited by

                                      @ilium007:

                                      I have a suspicion that this is an Avahi problem and one of the reasons I don't want it on my Alix / pfSesne box any longer however this was to be the topic of another thread I have never had time to start !

                                      This is definitely Avahi.  I can confirm that.  All of my machines have been renaming themselves for a while, and it's not limited to WiFi.  Some of my cabled machines (including my server) have done that.

                                      Avahi needs to be updated as it's still listed (I think) as an alpha project.  It's mostly stable, but could/should be more scalable and friendly.

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                                      • K
                                        kejianshi
                                        last edited by

                                        Yep - Different MACs but asking for the same name on the network.

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                                        • I
                                          ilium007
                                          last edited by

                                          @kejianshi:

                                          Yep - Different MACs but asking for the same name on the network.

                                          Cool - yeah I think thats thee conclusion I came to last time I looked at this ! It was a naming issues which lent itself to being an Avahi 'thing'

                                          Maybe not… :(

                                          This is what I see in the DHCP reservation table now and Avahi isn't running:

                                          10.0.101.101  a8:88:08:69:c5:5c  BW-iPhone-361 2013/09/17 22:50:33  2013/09/18 22:50:33  online  active

                                          My iphone has been renamed 361 times ! Why does this not happen on any other F/W device I have ever had at home ? I have been running Asus RTN66U with no such shenanigans !

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                                          • K
                                            kejianshi
                                            last edited by

                                            I do not know.  Perhaps it is an avahi issue then?

                                            Try this with your apple device and see if it gets fixed.

                                            Give it a 1 single name using a static DHCP assignment on wired based on MAC.
                                            Then give it a slightly different name in DHCP on the interface wireless is on based on MAC.

                                            (You know how to go into DHCP leases and do that right?)

                                            (You may be able to give the same name on both interfaces for the 2 MACs, but I wouldn't think so.  Never tried)

                                            One would think this would put an end to all the renaming.

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