** Reply to message from Petar Bogdanovic <pe...@smokva.net> on Tue, 21 Jan 2014 00:58:09 +0100
Sounds very useful, however I am very much a newbie regarding stuff at the command level on the Mac. I come from many years of OS/2 and Windoz. I assume from what you wrote that the file that I make is named linktool.sh. Did that. The "sh" extension I understand means it is a script. Ok, but where do I find rc.local and what is meant by absolute path? Is that Username/... all the way to the directory where the file and the app is located? The line added to rc.local is: Path to linktool.sh (space) Setup (space) Path to VirtualBox.app, Yes? Thanks for your help. Cliff > Hi, > > as it is right now, bridged guest interfaces won't adapt any link > changes of their bridged counterparts. Manually setting or unsetting > the "cable connected" checkbox is an option but not a very practical one > if you need to roam often and would like your VM to pick up the change > automatically. > > linktool is a small set of simple utilities that can make that process > transparent. It's currently OSX only since it relies on scutil(8) but > that could easily be adjusted in future. > > In order to use linktool, copy > > http://smokva.net/src/linktool.sh > > somewhere, make it executable and add the following line to your > rc.local (or create an equivalent launchd.plist for root): > > # linktool, absolute paths only > /path/to/linktool setup /path/to/VirtualBox.app > > and that should be it. All VMs that contain bridged interfaces should > automagically adapt any link changes on their next start. > > > Details for non-TLDR readers: > > linktool consists of several helpers that do a smaller part of the whole > job mentioned in the introduction: > > $ linktool > usage: > linktool watch host-if [host-if..] > linktool map guest host-if:guest-if[:guest-if..] > [host-if:guest-if[:guest-if..]..] > linktool mapper guest > linktool wrapper --startvm guest > linktool seesaw master-host-if slave-host-if > linktool setup vbox-dir vbox-cmd > > guest : name or UUID of any VM > host-if : host interface (see ifconfig) > guest-if : guest interface (integer, 1-8) > vbox-dir : path to VirtualBox.app directory > vbox-cmd : name of VirtualBox command > > linkwatch uses scutil(8) and watches host interfaces: > > $ linktool watch en0 en1 > en0:on # initial output > en1:off # initial output > en1:on # link status of en1 changed > > linkmap maps host interfaces to guest interfaces: > > $ linktool map "My Virtual Machine" en0:1:2 > Mapping link status (on): localhost/en0 -> My Virtual Machine/nic1 > Mapping link status (on): localhost/en0 -> My Virtual Machine/nic2 > > linkmapper maps all bridged interfaces of a guest. Its output looks > similar to the output above. > > linkwrapper is a wrapper around linkmapper and tries to act like > VirtualBoxVM i.e. it understands the --startvm flag. > > linksetup replaces VirtualBoxVM with a plain-text hook that starts > linkwrapper first followed by VirtualBoxVM-$(uname -m). It needs to > run on every boot since VirtualBoxStartup.sh will otherwise persist > (and remove/relink VirtualBoxVM). > > linkseesaw doesn't have much to do with linktool or VirtualBox. It > reuses linkwatch, downs the slave interface if the master interface is > up and vice versa. > > > Issues: > > * VBoxHeadless is not supported (shouldn't be hard to add) > > * Switching link status doesn't work well with all virtual > network devices. e1000 is the most reliable choice, while > virtio-net mostly works although it sometimes gets stuck > in a state that is only recoverable by unloading and loading > the module (on Linux guests). In that state, showvminfo > reports link status A while ethtool claims link status B. > > * Complicated bridging setups (two guest interfaces bridged with > one host interface for example) can be unreliable too. If you > can't get any packets through but tcpdump happily reports arp > traffic.. simplify your setup. > > > I've been using linktool for all my VMs since about a month and I pretty > much forgot about it. > > Comments & questions are welcome. > > Thanks, > > Petar Bogdanovic ------------------------------------------------------------------------------ CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments & Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk _______________________________________________ VBox-users-community mailing list VBox-users-community@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vbox-users-community _______________________________________________ Unsubscribe: mailto:vbox-users-community-requ...@lists.sourceforge.net?subject=unsubscribe
