search for: slirp

For the libvirt 5.8 release, I find that there is a new comment in qemu.conf: #slirp_helper = "/usr/bin/slirp-helper" It indicates that there is a slirp-helper to help setup slirp network. But I cannot find it even after I built the latest qemu(v4.1.0-1378-g98b2e3c9ab) and libvirt (v5.9.0-rc1-2-g73f91d659b). Could you please tell me where I can find that helper program?...

Hi Han, The slirp-helper is a helper program provided in libslirp rust bindings. It seems that you need to build it yourself ATM. git clone https://gitlab.freedesktop.org/slirp/libslirp-rs.git > cd libslirp-rs > cargo build --bin slirp-helper --features=all > Han Han <hhan@redhat.com> 於 2019年11月7日 週...

There's a heap overflow in qemu SLIRP which affects libguestfs, potentially allowing a malicious filesystem to take control of the confining qemu process and from there attack the host. It will affect libguestfs specifically when these two conditions are both met: - You're using the ‘direct’ backend. - Networking is enabled....

On Thursday, 6 December 2018 16:47:32 CET Richard W.M. Jones wrote: > We've been carrying this exact patch in RHEL 7 for several years. It > reverts the change made in 2014 where we switched to using the virbr0 > bridge for libguestfs networking instead of SLIRP. We thought SLIRP > was going to become unsupported in qemu, but recently there have been > more encouraging signs since it looks like SLIRP will be spun off as a > separate project, running as a modular process and properly secured > and supported. > > This reverts commit 224de...

Hi! If i want to use bridged network or openvswitch, does guestfwd only works with slirp network? Or how it work in case of using bridge/openvswitch? <devices> <channel type='unix'> <source mode='bind' path='/tmp/guestfwd'/> <target type='guestfwd' address='10.0.2.1' port='4600'/> </channel> <...

Let's actually compile and test the patch this time, rather than trusting the RHEL 7.6 patch to apply directly to head ... Rich.

qemu in SLIRP mode offers DHCP services to the appliance. We don't use them, but use a fixed IP address intead. This changes the appliance to get its IP address using DHCP. Note: This is only used when the network is enabled. dhclient is somewhat slower, but the penalty (a few seconds) is only paid for n...

Possibly for post 1.40. Rich.

We've been carrying this exact patch in RHEL 7 for several years. It reverts the change made in 2014 where we switched to using the virbr0 bridge for libguestfs networking instead of SLIRP. We thought SLIRP was going to become unsupported in qemu, but recently there have been more encouraging signs since it looks like SLIRP will be spun off as a separate project, running as a modular process and properly secured and supported. This reverts commit 224de20b9a8d5ea56f6337f19b4ca237bb8...

On Thu, Jul 18, 2019 at 10:39:09AM +0300, Vasiliy Tolstov wrote: > Hi! > If i want to use bridged network or openvswitch, does guestfwd only > works with slirp network? Or how it work in case of using > bridge/openvswitch? It is only supported with type=user (aka slirp) networking. > <devices> > <channel type='unix'> > <source mode='bind' path='/tmp/guestfwd'/> > <target type='gue...

Hello everybody, I am wondering if libvirt community implement features specefic to only one supported hypervisor? I am trying to set the host name and DNS from within the libvirt xml file in user mode network option (SLiRP). Right now I am using the <qemu:commandline>. My concern is if I want to use Xen or other hypervisors, how I should do the same. To be honest, I have not used any other hypervisor, except QEMU yet, I am trying to write a code which can be used for any hypervisor libvirt supports, though. An...

On Tue, Sep 30, 2014 at 04:44:05PM +0100, Richard W.M. Jones wrote: > When using the libvirt backend, don't use the SLIRP. Use > qemu-bridge-helper via libvirt to give us a full network connection. > One consequence of this is that 'ping' works in virt-builder > --run-command. > > Note unfortunately this does not fix virt-rescue (since it overrides > the default backend and uses 'direct...

...pening the new disk >> [ 31.0] Setting a random seed >> [ 31.0] Running: ping -c 4 172.16.12.200 >> connect: Network is unreachable >> virt-builder: error: ping -c 4 172.16.12.200: command exited with an error > > Because of the non-root networking technology we use (SLIRP), 'ping' > doesn't work and there are other shortcomings. See: I think the problem actually goes deeper than name resolution. On a Ubuntu 14.04 host the firstboot-command doesn't seem to be run at all and it appears that the network never gets configured. Here is a complete...

On 03/10/2015 05:12 PM, Richard W.M. Jones wrote: > Just for comparison, libguestfs 1.29.29 on Fedora host, plus > virt-builder, with a Fedora guest does this: > libguestfs 1.29.29 on a ubuntu 14.04 host with fedora-21 guest seems have no functioning network, it cannot ping the host. Is there some configuration required on the host? leer@eng-leer:~/libguestfs-1.29.29$ virt-builder

v2: - Make virbr0 configurable. - Fix the tests.

...moves the need for any vmchannel implementation, although we can still choose to use vmchannel if we want. In this so-called "null vmchannel" configuration, the appliance connects directly to a port on the library. The exact method is described in patch 9/10. This method still requires SLIRP (user mode networking) so it is not a panacea, because recent versions of qemu allow SLIRP to be removed. We therefore need to continue along the path of exploring alternate vmchannel implementations. [PATCH 01/10] Rearrange qemu command line order (no functional change). [PATCH 02/10] Combine te...

v3: - Various changes to dhclient/dhcpcd as discussed on the mailing list.

Hi: I noticed a bug in the realloc error checking code in the QEMU backend for RealTek8139. However, what''s worse is that there is no cap on the total size of the transmit buffer at all. So a guest can keep extending it until memory runs out. CP_TX_BUFFER_SIZE is already 64K. So it seems to me that we don''t need the while loop to extend the buffer at all since no transmitted

Dear all: I am trying to migrate a WinXP HVM (64M memory) from a machine (sender) to another machine (receiver) through AoE disk, however, there are some errors when do the following command: (My xen version is xen-4.0.1-rc5.hg, kernel 2.6.31.13, xen xen-4.0.1-rc6-pre, Both sender and receiver are the same xen version) xm migrate --live domain_id receiver_ip

When using the libvirt backend, don't use the SLIRP. Use qemu-bridge-helper via libvirt to give us a full network connection. One consequence of this is that 'ping' works in virt-builder --run-command. Note unfortunately this does not fix virt-rescue (since it overrides the default backend and uses 'direct' for various reasons). --...