LDP_HDR_DEAD_LEN
LDP_HDR_DEAD_LEN)) == NULL)
(pdu_len > (len - LDP_HDR_DEAD_LEN))) {
ldp_hdr.length = htons(size - LDP_HDR_DEAD_LEN);
dlen = ntohs(l.length) + LDP_HDR_DEAD_LEN;