No, don't worry, this is not a real commit message, this is more like an RFC about how to fix it. I'm not sure about this part of libvirt codebase, so I'm rather asking for help. Apparently, I have a network with netdef->forward.pfs == NULL, I suspect this is a network I have, that doesn't have any <forward/> element. With the following fix, everything works as expected, but I'm almost certain this is not enough. Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com&gt; --- src/network/bridge_driver.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index 1ba4c3d..3a40124 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -2196,6 +2196,9 @@ networkCreateInterfacePool(virNetworkDefPtr netdef) int ret = -1; size_t i; + if (!netdef->forward.pfs) + return 0; + if ((virNetDevGetVirtualFunctions(netdef->forward.pfs->dev, &vfNames, &virtFns, &numVirtFns)) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, -- 2.0.4