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-rw-r--r--src/dhcpv4.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/dhcpv4.c b/src/dhcpv4.c
index 5883847..ebddb22 100644
--- a/src/dhcpv4.c
+++ b/src/dhcpv4.c
@@ -458,6 +458,13 @@ static void handle_dhcpv4(void *addr, void *data, size_t len,
*/
dest.sin_addr.s_addr = INADDR_BROADCAST;
dest.sin_port = htons(DHCPV4_CLIENT_PORT);
+ } else if (!req->ciaddr.s_addr && msg == DHCPV4_MSG_NAK) {
+ /*
+ * client has no previous configuration -> no IP, so we need to reply
+ * with a broadcast packet
+ */
+ dest.sin_addr.s_addr = INADDR_BROADCAST;
+ dest.sin_port = htons(DHCPV4_CLIENT_PORT);
} else {
/*
* send reply to the newly (in this proccess) allocated IP