Date: Tue, 16 Apr 2013 13:54:28 +0200 From: Stefan Bethke <stb@lassitu.de> To: Nicolas de Bari Embriz Garcia Rojas <nbari@inbox.im> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: VirtualBox, if_bridge and bridged networking Message-ID: <113A294E-FF67-4355-8547-B2453B85A26D@lassitu.de> In-Reply-To: <516D2451.80105@inbox.im> References: <0BD2971C-918F-423C-8D59-A2A3E3B02F04@lassitu.de> <516D2451.80105@inbox.im>
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Am 16.04.2013 um 12:13 schrieb Nicolas de Bari Embriz Garcia Rojas: > On 04/16/2013 09:31, Stefan Bethke wrote: >> Hey, >> >> I'm a bit stumped getting a (FreeBSD guest) VM to use bridged networking to work. The same VM works fine on a Mac OS X and an Ubuntu host, so I'm certain it's not the VMs setting. >> >> I'm running >> # pkg info -g virtualbox* >> virtualbox-ose-4.2.6 A general-purpose full virtualizer for x86 hardware >> virtualbox-ose-kmod-4.2.6_4 VirtualBox kernel module for FreeBSD >> on FreeBSD 9.1-STABLE r249476 amd64. >> >> My LAN gets to the host via vlan1 (attached to re0); which in turn is bridged via bridge0. IP configuration is on bridge0. ... > > Try creating a tap interface and later bridge your VM to that tap. > > in your host create a bridge containing re0 and tap0. Thanks, that worked! Since I couldn't find documentation online, here's my working setup for the archives: My primary LAN comes into the host physically via re0; it's on vlan1. It is bridged via bridge0 to tap0, where it gets connected to a remote site via OpenVPN. Relevant bits from rc.conf (addresses changed): cloned_interfaces="bridge0 tap0 vlan1 vlan2 vlan3 vlan4 gif0" ifconfig_re0="up" ifconfig_vlan1="vlandev re0 vlan 1" ifconfig_bridge0="ether 02:00:00:00:00:01 addm tap0 addm vlan1" ifconfig_bridge0_alias0="inet 192.0.2.1/26" ifconfig_tap0="up" I've extended this config to include tap1, to be used for VirtualBox bridging: cloned_interfaces="bridge0 tap0 tap1 vlan1 vlan2 vlan3 vlan4 gif0" ifconfig_bridge0="ether 02:00:00:00:00:01 addm tap0 addm tap1 addm vlan1" ifconfig_bridge0_alias0="inet 192.0.2.1/26" ifconfig_re0="up" ifconfig_vlan1="vlandev re0 vlan 1" ifconfig_tap0="up" ifconfig_tap1="up" Additionally, VirtualBox needs to be able to open the tap interface. Two settings are necessary: in /etc/sysctl.conf, add: net.link.tap.user_open=1 In /etc/defvs.rules, under the rule section for your host, add: add path tap* group wheel mode 660 Then configure the VM to use tap1 for bridging: VBoxManage modifyvm FreeBSD-9-mini --bridgeadapter1 tap1 That should be it! Stefan -- Stefan Bethke <stb@lassitu.de> Fon +49 151 14070811
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