- if (shash_find(&info->ifaces, iface_cfg->name)) {
- VLOG_WARN("%s: database contains duplicate interface name",
- iface_cfg->name);
+ iface = shash_find_data(&info->ifaces, iface_cfg->name);
+ if (iface) {
+ if (iface_cfg == iface->iface_cfg) {
+ VLOG_WARN("%s: interface is in multiple ports "
+ "(%s and %s)",
+ iface_cfg->name,
+ iface->port->port_cfg->name,
+ port->port_cfg->name);
+ } else {
+ /* Log as an error because this violates the database's
+ * uniqueness constraints, so the database server
+ * shouldn't have allowed it. */
+ VLOG_ERR("%s: database contains duplicate interface "
+ "name", iface_cfg->name);
+ }