xnu-344.32.tar.gz

[apple/xnu.git] / bsd / netat / ddp.c

diff --git a/bsd/netat/ddp.c b/bsd/netat/ddp.c
index 4be1a64846dee4fb4e5984788234715a4c4c20da..93da77ebf3b7433d2ebb51084ec5902862556143 100644 (file)
--- a/bsd/netat/ddp.c
+++ b/bsd/netat/ddp.c
@@ -542,6 +542,14 @@ int ddp_output(mp, src_socket, src_addr_included)
 
        m = *mp;
        ddp = (at_ddp_t *)gbuf_rptr(m);
+       
+       if (!ifID) {
+               /* Device/Interface not configured */
+               dPrintf(D_M_DDP, D_L_ERROR, ("Device/Interface not configured"));
+               error = ENXIO;
+               gbuf_freel(*mp);
+               goto exit_ddp_output;
+       }
 
        if ((ddp->dst_socket > (unsigned) (DDP_SOCKET_LAST + 1)) || 
            (ddp->dst_socket < DDP_SOCKET_1st_RESERVED)) {