Date: Sun, 30 Jun 2013 21:39:05 -0500 From: Kevin Day <kevin@your.org> To: Zaphod Beeblebrox <zbeeble@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: Duplicate Address Detection misfire? Message-ID: <06BA4BD5-BE4E-4184-AFBB-D7FD4B2597D9@your.org> In-Reply-To: <CACpH0McSM7HDeJcQ1pLcXuEZ96n=15YmCaP4YheZghBbyEgfUw@mail.gmail.com> References: <CACpH0McSM7HDeJcQ1pLcXuEZ96n=15YmCaP4YheZghBbyEgfUw@mail.gmail.com>
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--Apple-Mail=_43288E98-F252-4279-A13E-3BEBA8FDC34B Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii On Jun 30, 2013, at 6:48 PM, Zaphod Beeblebrox <zbeeble@gmail.com> = wrote: > I have a FreeBSD 9.1-RELEASE vmware guest running. It is using the > "bridged" type of networking with VMWare. It gets it's IPv4 address = from > DHCP (successfully) and then fails to initialize IPv6. The relevant > rc.conf is: >=20 > ipv6_activate_all_interfaces=3D"YES" > ifconfig_em0_ipv6=3D"inet6 accept_rtadv" > ip6addrctl_verbose=3D"YES" >=20 > The console output says: >=20 > em0: DAD detected duplicate IPv6 address fe80:2::20c:29ff:fe0a:3989: = NS > in/out=3D2/1, NA in=3D0 > em0: DAD complete for fe80:2::20c:29ff:fe0a:3989 - duplicate found > em0: manual intervention required > em0: possible hardware address duplication deteted, disable IPv6 >=20 > And subsequently, em0's nd6 has "IFDISABLED" in it. >=20 > With wireshark, I see two ICMPv6 neighbor solicitations that are = identical > --- is this the problem? >=20 > How do I fix this? Did you copy this VM and have both copies running at once? If so, it = assigned the same MAC address to each VM.=20 VMware is suppose to detect this and ask if you "copied" or "moved" the = VM, and if you say "copied" it will randomly assign a new MAC to the VM. = If this didn't happen or if you said "moved" when you actually copied = it, just go in and delete/re-create the network interface in the VM's = settings to create a new MAC for it. If that's not the issue, we'd probably need more details about your = configuration. --Apple-Mail=_43288E98-F252-4279-A13E-3BEBA8FDC34B Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIPITCCBN0w ggPFoAMCAQICEHGS++YZX6xNEoV0cTSiGKcwDQYJKoZIhvcNAQEFBQAwezELMAkGA1UEBhMCR0Ix GzAZBgNVBAgMEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBwwHU2FsZm9yZDEaMBgGA1UECgwR Q29tb2RvIENBIExpbWl0ZWQxITAfBgNVBAMMGEFBQSBDZXJ0aWZpY2F0ZSBTZXJ2aWNlczAeFw0w NDAxMDEwMDAwMDBaFw0yODEyMzEyMzU5NTlaMIGuMQswCQYDVQQGEwJVUzELMAkGA1UECBMCVVQx FzAVBgNVBAcTDlNhbHQgTGFrZSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNUIE5ldHdvcmsx ITAfBgNVBAsTGGh0dHA6Ly93d3cudXNlcnRydXN0LmNvbTE2MDQGA1UEAxMtVVROLVVTRVJGaXJz dC1DbGllbnQgQXV0aGVudGljYXRpb24gYW5kIEVtYWlsMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A MIIBCgKCAQEAsjmFpPJ9q0E7YkY3rs3BYHW8OWX5ShpHornMSMxqmNVNNRm5pELlzkniii8efNIx 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