From owner-freebsd-virtualization@freebsd.org Tue Oct 20 02:02:57 2020 Return-Path: Delivered-To: freebsd-virtualization@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1E89D43E294 for ; Tue, 20 Oct 2020 02:02:57 +0000 (UTC) (envelope-from darcy@druid.net) Received: from mail.vex.net (mail.vex.net [98.158.139.68]) by mx1.freebsd.org (Postfix) with ESMTP id 4CFcMz5kVwz4Wpm for ; Tue, 20 Oct 2020 02:02:55 +0000 (UTC) (envelope-from darcy@druid.net) Received: from imp.druid.net (unknown [98.158.128.36]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: darcy) by mail.vex.net (Postfix) with ESMTPSA id 1B6B33812C for ; Mon, 19 Oct 2020 22:02:18 -0400 (EDT) To: freebsd-virtualization@freebsd.org From: D'Arcy Cain Autocrypt: addr=darcy@druid.net; keydata= xjMEXu32OxYJKwYBBAHaRw8BAQdAD839OEQVMqCs45KVwLKg4srvl51WsVhMpTGOd9z3Ym3N HUQnQXJjeSBDYWluIDxkYXJjeUBkcnVpZC5uZXQ+wpYEExYIAD4WIQSQJTNYM0vv3aTmBCs/ 5DDweYZnXQUCXu32OwIbAwUJCWYBgAULCQgHAgYVCgkICwIEFgIDAQIeAQIXgAAKCRA/5DDw eYZnXWAxAP9cDL1j4koUFRBNQyC4iMp/cx5KnozmtsFtiTrWdZBrIwD6A2rLFx60tJryd/qp SZpXk7UPDLH/PY1hstjx9WUbXQjOOARe7fY7EgorBgEEAZdVAQUBAQdAbK0SOaTRrkI2QAWz rCz29D2RDOgGTvEbDpyWiyA5RhQDAQgHwn4EGBYIACYWIQSQJTNYM0vv3aTmBCs/5DDweYZn XQUCXu32OwIbDAUJCWYBgAAKCRA/5DDweYZnXaNOAQDC77ymNjoMZQVgDCcmgZEk6IZxn45k nyW17OYCpRctvgD9Fg3aocAbHK7V9AhmSbDPxLNQygQUPjjU7Cyn97b1cQs= Subject: When is a switch not a switch? Message-ID: <57c32e6d-5572-3d3b-1a57-f3064bee7dc2@druid.net> Date: Mon, 19 Oct 2020 22:02:17 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Thunderbird/78.3.2 MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="jVzU7RkHyoBriBy8iuFhRVZkXbfYyLhb4" X-Rspamd-Queue-Id: 4CFcMz5kVwz4Wpm X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of darcy@druid.net has no SPF policy when checking 98.158.139.68) smtp.mailfrom=darcy@druid.net X-Spamd-Result: default: False [-0.28 / 15.00]; SUBJECT_ENDS_QUESTION(1.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-0.99)[-0.994]; HAS_ATTACHMENT(0.00)[]; MIME_GOOD(-0.20)[multipart/signed,multipart/mixed,text/plain,application/pgp-keys]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_SPAM_MEDIUM(0.20)[0.203]; TO_DN_NONE(0.00)[]; NEURAL_SPAM_SHORT(0.61)[0.609]; DMARC_NA(0.00)[druid.net]; ARC_NA(0.00)[]; SIGNED_PGP(-2.00)[]; R_SPF_NA(0.00)[no SPF record]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:+,3:+,4:+,5:~]; ASN(0.00)[asn:19842, ipnet:98.158.139.0/24, country:CA]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-virtualization] X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Oct 2020 02:02:57 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --jVzU7RkHyoBriBy8iuFhRVZkXbfYyLhb4 Content-Type: multipart/mixed; boundary="vjirb1z0fgPSLvGiZf0mNmArUiUwxwQNj"; protected-headers="v1" From: D'Arcy Cain To: freebsd-virtualization@freebsd.org Message-ID: <57c32e6d-5572-3d3b-1a57-f3064bee7dc2@druid.net> Subject: When is a switch not a switch? --vjirb1z0fgPSLvGiZf0mNmArUiUwxwQNj Content-Type: multipart/mixed; boundary="------------5AA5242C1A18EB13CC2E233C" Content-Language: en-US This is a multi-part message in MIME format. --------------5AA5242C1A18EB13CC2E233C Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable I am using bhyve with vm-bhyve, I am trying to set up a virtual network = with multiple hosts. The idea is that a VM would be on the same virtual = network no matter which actual host it is on. Say I have a public network a.b.c.0/24. I thought I could create a switc= h=20 on a host. The host would be a.b.c.1 and the VMs would be a.b.c.100 and = a.b.c.101. The idea would be that the VMs would appear on the real netwo= rk.=20 Then the 101 VM could migrate to a.b.c.2 and still be accessible. I=20 envisioned some sort of proxy arp would happen so that every VM would sim= ply=20 announce itself wherever it was. This did seem to work in that I could ping from the VM: # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: icmp_seq=3D0 ttl=3D114 time=3D1.734 ms Even IPV6: # ping6 2605:2600:1001::4b PING6(56=3D40+8+8 bytes) 2605:2600:1001::4 --> 2605:2600:1001::4b 16 bytes from 2605:2600:1001::4b, icmp_seq=3D0 hlim=3D64 time=3D0.960 ms 16 bytes from 2605:2600:1001::4b, icmp_seq=3D1 hlim=3D64 time=3D0.415 ms However TCP doesn't work. In fact, I could only ping by IP because the=20 system couldn't connect to the DNS server, to get an address even though = it=20 could ping it. I guess my first question is does this seem doable? If so, what am I=20 missing? Is it possible that a bhyve switch is more like a router? Thanks. --=20 D'Arcy J.M. Cain | Democracy is three wolves http://www.druid.net/darcy/ | and a sheep voting on +1 416 788 2246 (DoD#0082) (eNTP) | what's for dinner. IM: darcy@VybeNetworks.com, VoIP: sip:darcy@druid.net Disclaimer: By sending an email to ANY of my addresses you are agreeing that: 1. I am by definition, "the intended recipient". 2. All information in the email is mine to do with as I see fit and make such financial profit, political mileage, or good joke as it lends itself to. In particular, I may quote it where I please. 3. I may take the contents as representing the views of your company if I so wish. 4. This overrides any disclaimer or statement of confidentiality that may be included or implied in your message. --------------5AA5242C1A18EB13CC2E233C-- --vjirb1z0fgPSLvGiZf0mNmArUiUwxwQNj-- --jVzU7RkHyoBriBy8iuFhRVZkXbfYyLhb4 Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature" -----BEGIN PGP SIGNATURE----- wnsEABYIACMWIQSQJTNYM0vv3aTmBCs/5DDweYZnXQUCX45FKQUDAAAAAAAKCRA/5DDweYZnXZXp AP4lCdN3GC8dXFhmD6sxAqlzbNK1WG3R9xskwBduSZh66wD/Vb+p6N7tgOMaTueIYXDA1dSgI71r hxnO2UeGIdBvXQw= =dLiE -----END PGP SIGNATURE----- --jVzU7RkHyoBriBy8iuFhRVZkXbfYyLhb4--