Begin rewrite of NDP-relay

[project/odhcpd.git] / src / dhcpv4.c

diff --git a/src/dhcpv4.c b/src/dhcpv4.c
index 92a1397..fdf5f68 100644 (file)
--- a/src/dhcpv4.c
+++ b/src/dhcpv4.c
@@ -137,8 +137,8 @@ int setup_dhcpv4_interface(struct interface *iface, bool enable)
 
                        if (start && end && start < end &&
                                        start > ntohl(addr.s_addr & ~mask.s_addr) &&
-                                       (start & ntohl(mask.s_addr)) == start &&
-                                       (end & ntohl(mask.s_addr)) == end) {
+                                       (start & ntohl(~mask.s_addr)) == start &&
+                                       (end & ntohl(~mask.s_addr)) == end) {
                                iface->dhcpv4_start.s_addr = htonl(start) |
                                                (addr.s_addr & mask.s_addr);
                                iface->dhcpv4_end.s_addr = htonl(end) |
@@ -611,10 +611,9 @@ static struct dhcpv4_assignment* dhcpv4_lease(struct interface *iface,
                if (assigned && a)
                        lease = a;
        } else if (msg == DHCPV4_MSG_RELEASE) {
-               if (a) {
+               if (a && a->valid_until != LONG_MAX)
                        a->valid_until = 0;
-               }
-       } else if (msg == DHCPV4_MSG_DECLINE) {
+       } else if (msg == DHCPV4_MSG_DECLINE && a->valid_until != LONG_MAX) {
                memset(a->hwaddr, 0, sizeof(a->hwaddr));
                a->valid_until = now + 3600; // Block address for 1h
        }