From owner-freebsd-net@FreeBSD.ORG Mon Jul 1 02:39:09 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 220AC40E for ; Mon, 1 Jul 2013 02:39:09 +0000 (UTC) (envelope-from kevin@your.org) Received: from mail.your.org (mail.your.org [IPv6:2001:4978:1:2::cc09:3717]) by mx1.freebsd.org (Postfix) with ESMTP id CA88916DE for ; Mon, 1 Jul 2013 02:39:08 +0000 (UTC) Received: from mail.your.org (chi02.mail.your.org [204.9.55.23]) by mail.your.org (Postfix) with ESMTP id 5412CF06C22; Mon, 1 Jul 2013 02:39:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=your.org; h=content-type :mime-version:subject:from:in-reply-to:date:cc:message-id :references:to; s=selector1; bh=pC3Zv2wsrMwDqaQBzR4/vNhtNDU=; b= bD80e4TM0j8KTle00A7xl3HOlgy45CbMRfrhEcnZDqk/+6CZ9qeYP0npFppRSNPF cjTL3qztRyWaBHawdXs1txxUzrwt+G4/gix/nb73wC05Hk9v/gIYcWegvQ8S6Ki3 YbdgI6OKrSvwu6RlM4C2HPptFrowdMhNbmojLDwv1vg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=your.org; h=content-type :mime-version:subject:from:in-reply-to:date:cc:message-id :references:to; q=dns; s=selector1; b=XN2cMXjjAE5t2UgjnvT9I3hbx9 DcKWWSZXKTEjGmiF0HbZt5go93Q6TExDmpc2EIfo7jw3dgCYexWKMaxbwqywZsfz 9DqqcwLUcfsnHOss/guzAvarJsITKllSTDP5slokDWqj591m036EqNcEBscLMMFh VgvJwWjLIROFn4EZc= Received: from unassigned.v6.your.org (unknown [IPv6:2001:4978:1:45:f505:2b6c:dff2:f5a9]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mail.your.org (Postfix) with ESMTPSA id D6CA6F06C1F; Mon, 1 Jul 2013 02:39:07 +0000 (UTC) Content-Type: multipart/signed; boundary="Apple-Mail=_43288E98-F252-4279-A13E-3BEBA8FDC34B"; protocol="application/pkcs7-signature"; micalg=sha1 Mime-Version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Subject: Re: Duplicate Address Detection misfire? From: Kevin Day In-Reply-To: Date: Sun, 30 Jun 2013 21:39:05 -0500 Message-Id: <06BA4BD5-BE4E-4184-AFBB-D7FD4B2597D9@your.org> References: To: Zaphod Beeblebrox X-Mailer: Apple Mail (2.1508) Cc: FreeBSD Net X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Jul 2013 02:39:09 -0000 --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 = 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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