From: "Daniel P. Berrange" <berrange(a)redhat.com&gt; Running libvirtd unprivileged results in a warning message from the NWFilter driver virNWFilterSnoopLeaseFileRefresh:1882 : open("/var/run/libvirt/network/nwfilter.ltmp"): No such file or directory Since it requires privileged network access, this driver should not even run when unprivileged. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com&gt; --- src/nwfilter/nwfilter_driver.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/nwfilter/nwfilter_driver.c b/src/nwfilter/nwfilter_driver.c index 58d91f9..9034549 100644 --- a/src/nwfilter/nwfilter_driver.c +++ b/src/nwfilter/nwfilter_driver.c @@ -68,6 +68,9 @@ static int nwfilterDriverStartup(int privileged) { char *base = NULL; + if (!privileged) + return 0; + if (virNWFilterIPAddrMapInit() < 0) return -1; if (virNWFilterLearnInit() < 0)