diff options
| -rw-r--r-- | src/libsystemd-network/sd-dhcp-client.c | 9 |
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. |