diff options
| author | Tom Gundersen <teg@jklm.no> | 2014-06-21 14:39:36 +0200 |
|---|---|---|
| committer | Tom Gundersen <teg@jklm.no> | 2014-06-21 15:02:30 +0200 |
| commit | d6bd972d061af306ede2affd2c9340a1660f7996 (patch) | |
| tree | 49c9db76722dab8dfa2998c5fa46c90ada819f9c /src/libsystemd-network | |
| parent | da92ca5eb506d513033e0c7a85daf25a7e1c9d0e (diff) | |
sd-dhcp-server: fix broadcast of DHCP packets
The destination IP address should be INADDR_BROADCAST, but was
accidentally left as INADDR_ANY.
Diffstat (limited to 'src/libsystemd-network')
| -rw-r--r-- | src/libsystemd-network/dhcp-network.c | 4 | ||||
| -rw-r--r-- | src/libsystemd-network/sd-dhcp-server.c | 5 |
2 files changed, 8 insertions, 1 deletions
diff --git a/src/libsystemd-network/dhcp-network.c b/src/libsystemd-network/dhcp-network.c index d7ba0efa12..0e37bea197 100644 --- a/src/libsystemd-network/dhcp-network.c +++ b/src/libsystemd-network/dhcp-network.c @@ -127,6 +127,10 @@ int dhcp_network_bind_udp_socket(be32_t address, uint16_t port) { r = setsockopt(s, IPPROTO_IP, IP_PKTINFO, &on, sizeof(on)); if (r < 0) return -errno; + + r = setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on)); + if (r < 0) + return -errno; } r = bind(s, &src.sa, sizeof(src.in)); diff --git a/src/libsystemd-network/sd-dhcp-server.c b/src/libsystemd-network/sd-dhcp-server.c index e4236e8f7d..55a8fbe005 100644 --- a/src/libsystemd-network/sd-dhcp-server.c +++ b/src/libsystemd-network/sd-dhcp-server.c @@ -340,9 +340,12 @@ int dhcp_server_send_packet(sd_dhcp_server *server, } else if (req->message->ciaddr && type != DHCP_NAK) destination = req->message->ciaddr; - if (destination || requested_broadcast(req) || type == DHCP_NAK) + if (destination != INADDR_ANY) return dhcp_server_send_udp(server, destination, &packet->dhcp, sizeof(DHCPMessage) + optoffset); + else if (requested_broadcast(req) || type == DHCP_NAK) + return dhcp_server_send_udp(server, INADDR_BROADCAST, &packet->dhcp, + sizeof(DHCPMessage) + optoffset); else /* we cannot send UDP packet to specific MAC address when the address is not yet configured, so must fall back to raw packets */ |