https://bugzilla.redhat.com/show_bug.cgi?id=1556828 When defining a domain that has <interface type='hostdev'/> our parser creates two entries in virDomainDef: one for <interface/> and one for <hostdev/>. However, some info is shared between the two which makes user alias validation fail because alias belongs to the set of shared info. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/conf/domain_conf.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 86fc275116..c8d051fa9f 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -5584,6 +5584,13 @@ virDomainDeviceDefValidateAliasesIterator(virDomainDefPtr def, virDomainChrEquals(def->serials[0], dev->data.chr)) return 0; + if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV && + dev->data.hostdev->parent.type == VIR_DOMAIN_DEVICE_NET) { + /* This hostdev is a copy of some previous interface. + * Aliases are duplicated. */ + return 0; + } + if (virHashLookup(data->aliases, alias)) { virReportError(VIR_ERR_XML_ERROR, _("non unique alias detected: %s"),