CONVERT_TO_LONGSEQ
seqnr = CONVERT_TO_LONGSEQ((ntohl(dh->dh_seq) >> 8), dp->ref_pseq);
dp->ack_rcv = CONVERT_TO_LONGSEQ((ntohl(dah->dash.dah_ack) >> 8), dp->ref_seq);
dp->ack_rcv = CONVERT_TO_LONGSEQ((ntohl(dah->dash.dah_ack) >> 8), dp->ref_seq);
dp->ack_rcv = CONVERT_TO_LONGSEQ((ntohl(dah->dash.dah_ack) >> 8), dp->ref_seq);