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-rw-r--r--src/libsystemd-network/sd-dhcp-client.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index 0300a6be93..8f549060bf 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -286,6 +286,15 @@ static int client_message_init(sd_dhcp_client *client, DHCPPacket **ret,
refuse to issue an DHCP lease if 'secs' is set to zero */
packet->dhcp.secs = htobe16(client->secs);
+ /* RFC2132 section 4.1
+ A client that cannot receive unicast IP datagrams until its protocol
+ software has been configured with an IP address SHOULD set the
+ BROADCAST bit in the 'flags' field to 1 in any DHCPDISCOVER or
+ DHCPREQUEST messages that client sends. The BROADCAST bit will
+ provide a hint to the DHCP server and BOOTP relay agent to broadcast
+ any messages to the client on the client's subnet. */
+ packet->dhcp.flags = htobe16(0x8000);
+
/* RFC2132 section 4.1.1:
The client MUST include its hardware address in the ’chaddr’ field, if
necessary for delivery of DHCP reply messages.