From ce381883a157ede2ad05a28bb40ae88fc0948606 Mon Sep 17 00:00:00 2001 From: Tobias Brunner Date: Tue, 16 Oct 2018 12:07:05 +0200 Subject: [PATCH] dhcp: Ignore DHCP OFFER messages without assigned address FreeRADIUS seems to respond that way if it can't allocate an address to the client. --- src/libcharon/plugins/dhcp/dhcp_socket.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/libcharon/plugins/dhcp/dhcp_socket.c b/src/libcharon/plugins/dhcp/dhcp_socket.c index 1e208d094..ecd92f2ef 100644 --- a/src/libcharon/plugins/dhcp/dhcp_socket.c +++ b/src/libcharon/plugins/dhcp/dhcp_socket.c @@ -489,6 +489,16 @@ static void handle_offer(private_dhcp_socket_t *this, dhcp_t *dhcp, int optlen) offer = host_create_from_chunk(AF_INET, chunk_from_thing(dhcp->your_address), 0); + if (offer->is_anyaddr(offer)) + { + server = host_create_from_chunk(AF_INET, + chunk_from_thing(dhcp->server_address), 0); + DBG1(DBG_CFG, "ignoring DHCP OFFER %+H from %H", offer, server); + server->destroy(server); + offer->destroy(offer); + return; + } + this->mutex->lock(this->mutex); enumerator = this->discover->create_enumerator(this->discover); while (enumerator->enumerate(enumerator, &transaction))