config: add option to indicate dns service presence

[project/odhcpd.git] / src / odhcpd.c

diff --git a/src/odhcpd.c b/src/odhcpd.c
index 39e0e5137cf5514555f0ea98420d45bfe284b47d..04a8054264f66eab9ab07ef6709efe22f144d359 100644 (file)
--- a/src/odhcpd.c
+++ b/src/odhcpd.c
@@ -253,6 +253,9 @@ int odhcpd_get_interface_dns_addr(const struct interface *iface, struct in6_addr
        time_t now = odhcpd_time();
        ssize_t m = -1;
 
+       if (!iface->dns_service)
+               return -1;
+
        for (size_t i = 0; i < iface->addr6_len; ++i) {
                if (iface->addr6[i].valid <= (uint32_t)now)
                        continue;