KEX_INIT_RECVD
kex->flags &= ~(KEX_INIT_SENT|KEX_INIT_RECVD);
if ((kex->flags & KEX_INIT_RECVD) != 0) {
kex->flags |= KEX_INIT_RECVD;
(ssh->kex->flags & KEX_INIT_RECVD) != 0 &&