Date: Sat, 28 Jun 2008 08:27:38 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Giulio Ferro <auryn@zirakzigil.org> Cc: freebsd-net@freebsd.org Subject: Re: SOLVED (was Re: Problem clarification (was: Problems with vlan + carp + alias)) Message-ID: <20080627222738.GD50631@server.vk2pj.dyndns.org> In-Reply-To: <486554CC.8050609@zirakzigil.org> References: <486000B5.9090703@zirakzigil.org> <4862B2AF.70202@zirakzigil.org> <48630AA3.3000800@ibctech.ca> <4863F6B3.4020308@zirakzigil.org> <20080627072301.GZ50631@server.vk2pj.dyndns.org> <486554CC.8050609@zirakzigil.org>
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--fckbADODYWZD5TdN Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2008-Jun-27 22:59:56 +0200, Giulio Ferro <auryn@zirakzigil.org> wrote: >Peter Jeremy wrote: >> The kernel should send out gratuitous ARP requests whenever you assign >> an address to an interface. You could confirm that this is happening >> by tcpdumping the interface whilst you add aliases. >> =20 >I have bad news for you all: this doesn't seem to happen for alias >interfaces. I've just tried to replicate what happened days >ago. I've verified that only the base (non alias) interface sends >proper is-at messages. The aliases don't.... I'm not seeing this on physical interfaces. I can't immediately verify this on VLAN interfaces but could at work next week. Adding 192.168.123.253 as an alias on FreeBSD 7.0-STABLE (mid May): 08:21:39.899113 00:0f:b0:74:9c:a3 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x080= 6), length 42: arp who-has 192.168.123.253 tell 192.168.123.253 Adding 192.168.123.253 as an alias on FreeBSD 6.3-PRERELEASE: 08:24:21.077266 00:12:0e:20:2b:ad > ff:ff:ff:ff:ff:ff, ethertype ARP (0x080= 6), length 42: arp who-has 192.168.123.253 tell 192.168.123.253 --=20 Peter Jeremy Please excuse any delays as the result of my ISP's inability to implement an MTA that is either RFC2821-compliant or matches their claimed behaviour. --fckbADODYWZD5TdN Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkhlaVoACgkQ/opHv/APuIc4AQCfej57A8ExjRk6KRGA2yZmxS1f Sh8AoK8ND7FdU/7wTajQkyX4hnVgDFc0 =D83f -----END PGP SIGNATURE----- --fckbADODYWZD5TdN--
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