In systems running on hypervisors this flag needs to be set ON, so offers can reach the virtual machines.
For more information please refer to this thread in CoreOS: https://github.com/coreos/bugs/issues/12 Signed-off-by: Camilo Aguilar <camilo.agui...@gmail.com> --- src/libsystemd-network/sd-dhcp-client.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c index 0300a6b..8f54906 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. -- 1.8.5.2 (Apple Git-48)
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