/*
 * Packet type contexts, so that ssh2_pkt_type can correctly decode
 * the ambiguous type numbers back into the correct type strings.
 */
#define SSH2_PKTCTX_DHGROUP          0x0001
#define SSH2_PKTCTX_DHGEX            0x0002
#define SSH2_PKTCTX_KEX_MASK         0x000F
#define SSH2_PKTCTX_PUBLICKEY        0x0010
#define SSH2_PKTCTX_PASSWORD         0x0020
#define SSH2_PKTCTX_KBDINTER         0x0040
#define SSH2_PKTCTX_AUTH_MASK        0x00F0

#define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1	/* 0x1 */
#define SSH2_DISCONNECT_PROTOCOL_ERROR            2	/* 0x2 */

     */
    if (ssh->remote_bugs & BUG_SSH2_HMAC)
	s->maclist = buggymacs, s->nmacs = lenof(buggymacs);
    else
	s->maclist = macs, s->nmacs = lenof(macs);

  begin_key_exchange:
    ssh->pkt_ctx &= ~SSH2_PKTCTX_KEX_MASK;
    {
	int i, j, commalist_started;

	/*
	 * Set up the preferred key exchange. (NULL => warn below here)
	 */
	s->n_preferred_kex = 0;